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Finding the Fourth Proportional to 721,743.30, 996,051.96 and 415,814.13

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Solution

The fourth proportional to 721,743.30, 996,051.96 and 415,814.13 is: 573,850.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,743.30 : 996,051.96 = 415,814.13 : x
  2. Step 2: Convert to fraction form
    721,743.30/996,051.96 = 415,814.13/x
  3. Step 3: Cross multiply
    721,743.30x = 996,051.96 × 415,814.13
  4. Step 4: Simplify right side
    721,743.30x = 414,172,479,182.20
  5. Step 5: Solve for x
    x = 414,172,479,182.20/721,743.30
  6. Step 6: Final answer
    x = 573,850.12

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1.5x scale

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.