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Finding the Fourth Proportional to 916,454.53, 1,375,687.41 and 728,125.48

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Solution

The fourth proportional to 916,454.53, 1,375,687.41 and 728,125.48 is: 1,092,987.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,454.53 : 1,375,687.41 = 728,125.48 : x
  2. Step 2: Convert to fraction form
    916,454.53/1,375,687.41 = 728,125.48/x
  3. Step 3: Cross multiply
    916,454.53x = 1,375,687.41 × 728,125.48
  4. Step 4: Simplify right side
    916,454.53x = 1,001,673,055,736.21
  5. Step 5: Solve for x
    x = 1,001,673,055,736.21/916,454.53
  6. Step 6: Final answer
    x = 1,092,987.18

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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.