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Finding the Fourth Proportional to 641,687.30, 963,477.15 and 357,932.25

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Solution

The fourth proportional to 641,687.30, 963,477.15 and 357,932.25 is: 537,426.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,687.30 : 963,477.15 = 357,932.25 : x
  2. Step 2: Convert to fraction form
    641,687.30/963,477.15 = 357,932.25/x
  3. Step 3: Cross multiply
    641,687.30x = 963,477.15 × 357,932.25
  4. Step 4: Simplify right side
    641,687.30x = 344,859,544,123.09
  5. Step 5: Solve for x
    x = 344,859,544,123.09/641,687.30
  6. Step 6: Final answer
    x = 537,426.17

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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.