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Finding the Fourth Proportional to 680,472.40, 939,044.46 and 374,542.24

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Solution

The fourth proportional to 680,472.40, 939,044.46 and 374,542.24 is: 516,864.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,472.40 : 939,044.46 = 374,542.24 : x
  2. Step 2: Convert to fraction form
    680,472.40/939,044.46 = 374,542.24/x
  3. Step 3: Cross multiply
    680,472.40x = 939,044.46 × 374,542.24
  4. Step 4: Simplify right side
    680,472.40x = 351,711,815,507.99
  5. Step 5: Solve for x
    x = 351,711,815,507.99/680,472.40
  6. Step 6: Final answer
    x = 516,864.19

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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.