Home / 485,120,739.70-727,681,109.55-140,085,622.90

Finding the Fourth Proportional to 485,120,739.70, 727,681,109.55 and 140,085,622.90

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Solution

The fourth proportional to 485,120,739.70, 727,681,109.55 and 140,085,622.90 is: 210,128,434.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,120,739.70 : 727,681,109.55 = 140,085,622.90 : x
  2. Step 2: Convert to fraction form
    485,120,739.70/727,681,109.55 = 140,085,622.90/x
  3. Step 3: Cross multiply
    485,120,739.70x = 727,681,109.55 × 140,085,622.90
  4. Step 4: Simplify right side
    485,120,739.70x = 101,937,661,503,874,880
  5. Step 5: Solve for x
    x = 101,937,661,503,874,880/485,120,739.70
  6. Step 6: Final answer
    x = 210,128,434.35

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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.