Home / 485,120,018.70-727,680,028.05-140,084,901.90

Finding the Fourth Proportional to 485,120,018.70, 727,680,028.05 and 140,084,901.90

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Solution

The fourth proportional to 485,120,018.70, 727,680,028.05 and 140,084,901.90 is: 210,127,352.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,120,018.70 : 727,680,028.05 = 140,084,901.90 : x
  2. Step 2: Convert to fraction form
    485,120,018.70/727,680,028.05 = 140,084,901.90/x
  3. Step 3: Cross multiply
    485,120,018.70x = 727,680,028.05 × 140,084,901.90
  4. Step 4: Simplify right side
    485,120,018.70x = 101,936,985,343,973,488
  5. Step 5: Solve for x
    x = 101,936,985,343,973,488/485,120,018.70
  6. Step 6: Final answer
    x = 210,127,352.85

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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.