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Finding the Fourth Proportional to 641,757.63, 885,658.14 and 369,869.79

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Solution

The fourth proportional to 641,757.63, 885,658.14 and 369,869.79 is: 510,439.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,757.63 : 885,658.14 = 369,869.79 : x
  2. Step 2: Convert to fraction form
    641,757.63/885,658.14 = 369,869.79/x
  3. Step 3: Cross multiply
    641,757.63x = 885,658.14 × 369,869.79
  4. Step 4: Simplify right side
    641,757.63x = 327,578,190,253.59
  5. Step 5: Solve for x
    x = 327,578,190,253.59/641,757.63
  6. Step 6: Final answer
    x = 510,439.10

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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.