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Finding the Fourth Proportional to 466,637.20, 699,178.20 and 438,643.60

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Solution

The fourth proportional to 466,637.20, 699,178.20 and 438,643.60 is: 657,234.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    466,637.20 : 699,178.20 = 438,643.60 : x
  2. Step 2: Convert to fraction form
    466,637.20/699,178.20 = 438,643.60/x
  3. Step 3: Cross multiply
    466,637.20x = 699,178.20 × 438,643.60
  4. Step 4: Simplify right side
    466,637.20x = 306,690,042,689.52
  5. Step 5: Solve for x
    x = 306,690,042,689.52/466,637.20
  6. Step 6: Final answer
    x = 657,234.45

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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.