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Finding the Fourth Proportional to 661,255.38, 991,095.75 and 460,488.78

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Solution

The fourth proportional to 661,255.38, 991,095.75 and 460,488.78 is: 690,184.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,255.38 : 991,095.75 = 460,488.78 : x
  2. Step 2: Convert to fraction form
    661,255.38/991,095.75 = 460,488.78/x
  3. Step 3: Cross multiply
    661,255.38x = 991,095.75 × 460,488.78
  4. Step 4: Simplify right side
    661,255.38x = 456,388,472,780.69
  5. Step 5: Solve for x
    x = 456,388,472,780.69/661,255.38
  6. Step 6: Final answer
    x = 690,184.89

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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.