Home / 485,115,999.20-727,705,491.60-255,533,487.20

Finding the Fourth Proportional to 485,115,999.20, 727,705,491.60 and 255,533,487.20

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Solution

The fourth proportional to 485,115,999.20, 727,705,491.60 and 255,533,487.20 is: 383,316,819.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,115,999.20 : 727,705,491.60 = 255,533,487.20 : x
  2. Step 2: Convert to fraction form
    485,115,999.20/727,705,491.60 = 255,533,487.20/x
  3. Step 3: Cross multiply
    485,115,999.20x = 727,705,491.60 × 255,533,487.20
  4. Step 4: Simplify right side
    485,115,999.20x = 185,953,121,923,138,304
  5. Step 5: Solve for x
    x = 185,953,121,923,138,304/485,115,999.20
  6. Step 6: Final answer
    x = 383,316,819.54

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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.