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Finding the Fourth Proportional to 539,446.40, 744,432.35 and 297,728.96

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Solution

The fourth proportional to 539,446.40, 744,432.35 and 297,728.96 is: 410,863.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,446.40 : 744,432.35 = 297,728.96 : x
  2. Step 2: Convert to fraction form
    539,446.40/744,432.35 = 297,728.96/x
  3. Step 3: Cross multiply
    539,446.40x = 744,432.35 × 297,728.96
  4. Step 4: Simplify right side
    539,446.40x = 221,639,067,867.21
  5. Step 5: Solve for x
    x = 221,639,067,867.21/539,446.40
  6. Step 6: Final answer
    x = 410,863.93

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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.