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Finding the Fourth Proportional to 866,646.10, 1,300,422.42 and 354,691.27

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Solution

The fourth proportional to 866,646.10, 1,300,422.42 and 354,691.27 is: 532,222.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,646.10 : 1,300,422.42 = 354,691.27 : x
  2. Step 2: Convert to fraction form
    866,646.10/1,300,422.42 = 354,691.27/x
  3. Step 3: Cross multiply
    866,646.10x = 1,300,422.42 × 354,691.27
  4. Step 4: Simplify right side
    866,646.10x = 461,248,479,686.27
  5. Step 5: Solve for x
    x = 461,248,479,686.27/866,646.10
  6. Step 6: Final answer
    x = 532,222.41

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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.