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Finding the Fourth Proportional to 721,987.24, 996,446.66 and 416,005.04

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Solution

The fourth proportional to 721,987.24, 996,446.66 and 416,005.04 is: 574,147.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,987.24 : 996,446.66 = 416,005.04 : x
  2. Step 2: Convert to fraction form
    721,987.24/996,446.66 = 416,005.04/x
  3. Step 3: Cross multiply
    721,987.24x = 996,446.66 × 416,005.04
  4. Step 4: Simplify right side
    721,987.24x = 414,526,832,651.17
  5. Step 5: Solve for x
    x = 414,526,832,651.17/721,987.24
  6. Step 6: Final answer
    x = 574,147.03

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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.