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Finding the Fourth Proportional to 418,542.80, 627,814.20 and 292,571.60

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Solution

The fourth proportional to 418,542.80, 627,814.20 and 292,571.60 is: 438,857.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,542.80 : 627,814.20 = 292,571.60 : x
  2. Step 2: Convert to fraction form
    418,542.80/627,814.20 = 292,571.60/x
  3. Step 3: Cross multiply
    418,542.80x = 627,814.20 × 292,571.60
  4. Step 4: Simplify right side
    418,542.80x = 183,680,604,996.72
  5. Step 5: Solve for x
    x = 183,680,604,996.72/418,542.80
  6. Step 6: Final answer
    x = 438,857.40

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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.