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Finding the Fourth Proportional to 641,689.29, 963,480.15 and 357,934.24

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Solution

The fourth proportional to 641,689.29, 963,480.15 and 357,934.24 is: 537,429.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,689.29 : 963,480.15 = 357,934.24 : x
  2. Step 2: Convert to fraction form
    641,689.29/963,480.15 = 357,934.24/x
  3. Step 3: Cross multiply
    641,689.29x = 963,480.15 × 357,934.24
  4. Step 4: Simplify right side
    641,689.29x = 344,862,532,836.64
  5. Step 5: Solve for x
    x = 344,862,532,836.64/641,689.29
  6. Step 6: Final answer
    x = 537,429.15

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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.