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Finding the Fourth Proportional to 546,435.20, 819,652.80 and 387,002.90

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Solution

The fourth proportional to 546,435.20, 819,652.80 and 387,002.90 is: 580,504.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,435.20 : 819,652.80 = 387,002.90 : x
  2. Step 2: Convert to fraction form
    546,435.20/819,652.80 = 387,002.90/x
  3. Step 3: Cross multiply
    546,435.20x = 819,652.80 × 387,002.90
  4. Step 4: Simplify right side
    546,435.20x = 317,208,010,593.12
  5. Step 5: Solve for x
    x = 317,208,010,593.12/546,435.20
  6. Step 6: Final answer
    x = 580,504.35

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Similar ratio
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1.5x scale

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.