Home / 485,120,761.70-727,681,142.55-140,085,644.90

Finding the Fourth Proportional to 485,120,761.70, 727,681,142.55 and 140,085,644.90

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Solution

The fourth proportional to 485,120,761.70, 727,681,142.55 and 140,085,644.90 is: 210,128,467.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,120,761.70 : 727,681,142.55 = 140,085,644.90 : x
  2. Step 2: Convert to fraction form
    485,120,761.70/727,681,142.55 = 140,085,644.90/x
  3. Step 3: Cross multiply
    485,120,761.70x = 727,681,142.55 × 140,085,644.90
  4. Step 4: Simplify right side
    485,120,761.70x = 101,937,682,135,685,584
  5. Step 5: Solve for x
    x = 101,937,682,135,685,584/485,120,761.70
  6. Step 6: Final answer
    x = 210,128,467.35

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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.