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Finding the Fourth Proportional to 641,687.70, 963,477.76 and 357,932.65

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Solution

The fourth proportional to 641,687.70, 963,477.76 and 357,932.65 is: 537,426.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,687.70 : 963,477.76 = 357,932.65 : x
  2. Step 2: Convert to fraction form
    641,687.70/963,477.76 = 357,932.65/x
  3. Step 3: Cross multiply
    641,687.70x = 963,477.76 × 357,932.65
  4. Step 4: Simplify right side
    641,687.70x = 344,860,145,323.89
  5. Step 5: Solve for x
    x = 344,860,145,323.89/641,687.70
  6. Step 6: Final answer
    x = 537,426.77

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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.