Home / 926,897.70-1,390,346.55-394,436.10

Finding the Fourth Proportional to 926,897.70, 1,390,346.55 and 394,436.10

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Solution

The fourth proportional to 926,897.70, 1,390,346.55 and 394,436.10 is: 591,654.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,897.70 : 1,390,346.55 = 394,436.10 : x
  2. Step 2: Convert to fraction form
    926,897.70/1,390,346.55 = 394,436.10/x
  3. Step 3: Cross multiply
    926,897.70x = 1,390,346.55 × 394,436.10
  4. Step 4: Simplify right side
    926,897.70x = 548,402,870,830.46
  5. Step 5: Solve for x
    x = 548,402,870,830.46/926,897.70
  6. Step 6: Final answer
    x = 591,654.15

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Double scale
Find fourth proportional to 926,898.70, 1,390,348.05 and 394,437.10
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.