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Finding the Fourth Proportional to 669,073.59, 922,901.63 and 396,948.87

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Solution

The fourth proportional to 669,073.59, 922,901.63 and 396,948.87 is: 547,540.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,073.59 : 922,901.63 = 396,948.87 : x
  2. Step 2: Convert to fraction form
    669,073.59/922,901.63 = 396,948.87/x
  3. Step 3: Cross multiply
    669,073.59x = 922,901.63 × 396,948.87
  4. Step 4: Simplify right side
    669,073.59x = 366,344,757,164.91
  5. Step 5: Solve for x
    x = 366,344,757,164.91/669,073.59
  6. Step 6: Final answer
    x = 547,540.30

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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.