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Finding the Fourth Proportional to 642,451.72, 886,559.46 and 370,531

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Solution

The fourth proportional to 642,451.72, 886,559.46 and 370,531 is: 511,318.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,451.72 : 886,559.46 = 370,531 : x
  2. Step 2: Convert to fraction form
    642,451.72/886,559.46 = 370,531/x
  3. Step 3: Cross multiply
    642,451.72x = 886,559.46 × 370,531
  4. Step 4: Simplify right side
    642,451.72x = 328,497,763,273.26
  5. Step 5: Solve for x
    x = 328,497,763,273.26/642,451.72
  6. Step 6: Final answer
    x = 511,318.99

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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.