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Finding the Fourth Proportional to 916,414.71, 1,375,627.67 and 728,085.66

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Solution

The fourth proportional to 916,414.71, 1,375,627.67 and 728,085.66 is: 1,092,927.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,414.71 : 1,375,627.67 = 728,085.66 : x
  2. Step 2: Convert to fraction form
    916,414.71/1,375,627.67 = 728,085.66/x
  3. Step 3: Cross multiply
    916,414.71x = 1,375,627.67 × 728,085.66
  4. Step 4: Simplify right side
    916,414.71x = 1,001,574,776,385.78
  5. Step 5: Solve for x
    x = 1,001,574,776,385.78/916,414.71
  6. Step 6: Final answer
    x = 1,092,927.43

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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.