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Finding the Fourth Proportional to 485,042.60, 727,563.90 and 457,486.40

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Solution

The fourth proportional to 485,042.60, 727,563.90 and 457,486.40 is: 686,229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,042.60 : 727,563.90 = 457,486.40 : x
  2. Step 2: Convert to fraction form
    485,042.60/727,563.90 = 457,486.40/x
  3. Step 3: Cross multiply
    485,042.60x = 727,563.90 × 457,486.40
  4. Step 4: Simplify right side
    485,042.60x = 332,850,589,380.96
  5. Step 5: Solve for x
    x = 332,850,589,380.96/485,042.60
  6. Step 6: Final answer
    x = 686,229.60

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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.