Home / 485,119,947.20-727,679,920.80-140,084,830.40

Finding the Fourth Proportional to 485,119,947.20, 727,679,920.80 and 140,084,830.40

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Solution

The fourth proportional to 485,119,947.20, 727,679,920.80 and 140,084,830.40 is: 210,127,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,119,947.20 : 727,679,920.80 = 140,084,830.40 : x
  2. Step 2: Convert to fraction form
    485,119,947.20/727,679,920.80 = 140,084,830.40/x
  3. Step 3: Cross multiply
    485,119,947.20x = 727,679,920.80 × 140,084,830.40
  4. Step 4: Simplify right side
    485,119,947.20x = 101,936,918,290,753,424
  5. Step 5: Solve for x
    x = 101,936,918,290,753,424/485,119,947.20
  6. Step 6: Final answer
    x = 210,127,245.60

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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.