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Finding the Fourth Proportional to 437,068.80, 655,862.40 and 287,737.20

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Solution

The fourth proportional to 437,068.80, 655,862.40 and 287,737.20 is: 431,776.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,068.80 : 655,862.40 = 287,737.20 : x
  2. Step 2: Convert to fraction form
    437,068.80/655,862.40 = 287,737.20/x
  3. Step 3: Cross multiply
    437,068.80x = 655,862.40 × 287,737.20
  4. Step 4: Simplify right side
    437,068.80x = 188,716,010,561.28
  5. Step 5: Solve for x
    x = 188,716,010,561.28/437,068.80
  6. Step 6: Final answer
    x = 431,776.44

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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.