Home / 676,303.15-933,071.76-389,817.09

Finding the Fourth Proportional to 676,303.15, 933,071.76 and 389,817.09

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Solution

The fourth proportional to 676,303.15, 933,071.76 and 389,817.09 is: 537,816.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,303.15 : 933,071.76 = 389,817.09 : x
  2. Step 2: Convert to fraction form
    676,303.15/933,071.76 = 389,817.09/x
  3. Step 3: Cross multiply
    676,303.15x = 933,071.76 × 389,817.09
  4. Step 4: Simplify right side
    676,303.15x = 363,727,318,244.38
  5. Step 5: Solve for x
    x = 363,727,318,244.38/676,303.15
  6. Step 6: Final answer
    x = 537,816.98

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.