Home / 391,140,583,430.60-586,710,875,145.90-325,020,819,974.60

Finding the Fourth Proportional to 391,140,583,430.60, 586,710,875,145.90 and 325,020,819,974.60

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Solution

The fourth proportional to 391,140,583,430.60, 586,710,875,145.90 and 325,020,819,974.60 is: 487,531,229,961.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,140,583,430.60 : 586,710,875,145.90 = 325,020,819,974.60 : x
  2. Step 2: Convert to fraction form
    391,140,583,430.60/586,710,875,145.90 = 325,020,819,974.60/x
  3. Step 3: Cross multiply
    391,140,583,430.60x = 586,710,875,145.90 × 325,020,819,974.60
  4. Step 4: Simplify right side
    391,140,583,430.60x = 190,693,249,727,935,560,024,064
  5. Step 5: Solve for x
    x = 190,693,249,727,935,560,024,064/391,140,583,430.60
  6. Step 6: Final answer
    x = 487,531,229,961.90

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Double scale
Find fourth proportional to 391,140,583,431.60, 586,710,875,147.40 and 325,020,819,975.60
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.