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Finding the Fourth Proportional to 539,445.76, 744,434.40 and 297,728.50

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Solution

The fourth proportional to 539,445.76, 744,434.40 and 297,728.50 is: 410,864.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,445.76 : 744,434.40 = 297,728.50 : x
  2. Step 2: Convert to fraction form
    539,445.76/744,434.40 = 297,728.50/x
  3. Step 3: Cross multiply
    539,445.76x = 744,434.40 × 297,728.50
  4. Step 4: Simplify right side
    539,445.76x = 221,639,337,260.40
  5. Step 5: Solve for x
    x = 221,639,337,260.40/539,445.76
  6. Step 6: Final answer
    x = 410,864.92

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Similar ratio
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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.