Home / 485,042.40-727,563.60-477,169.20

Finding the Fourth Proportional to 485,042.40, 727,563.60 and 477,169.20

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Solution

The fourth proportional to 485,042.40, 727,563.60 and 477,169.20 is: 715,753.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,042.40 : 727,563.60 = 477,169.20 : x
  2. Step 2: Convert to fraction form
    485,042.40/727,563.60 = 477,169.20/x
  3. Step 3: Cross multiply
    485,042.40x = 727,563.60 × 477,169.20
  4. Step 4: Simplify right side
    485,042.40x = 347,170,940,961.12
  5. Step 5: Solve for x
    x = 347,170,940,961.12/485,042.40
  6. Step 6: Final answer
    x = 715,753.80

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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.