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Finding the Fourth Proportional to 643,452.33, 888,042.96 and 371,519.78

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Solution

The fourth proportional to 643,452.33, 888,042.96 and 371,519.78 is: 512,742.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,452.33 : 888,042.96 = 371,519.78 : x
  2. Step 2: Convert to fraction form
    643,452.33/888,042.96 = 371,519.78/x
  3. Step 3: Cross multiply
    643,452.33x = 888,042.96 × 371,519.78
  4. Step 4: Simplify right side
    643,452.33x = 329,925,520,689.53
  5. Step 5: Solve for x
    x = 329,925,520,689.53/643,452.33
  6. Step 6: Final answer
    x = 512,742.76

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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.