Home / 1,120,129,540.70-1,680,194,311.05-1,009,164,659.90

Finding the Fourth Proportional to 1,120,129,540.70, 1,680,194,311.05 and 1,009,164,659.90

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Solution

The fourth proportional to 1,120,129,540.70, 1,680,194,311.05 and 1,009,164,659.90 is: 1,513,746,989.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,129,540.70 : 1,680,194,311.05 = 1,009,164,659.90 : x
  2. Step 2: Convert to fraction form
    1,120,129,540.70/1,680,194,311.05 = 1,009,164,659.90/x
  3. Step 3: Cross multiply
    1,120,129,540.70x = 1,680,194,311.05 × 1,009,164,659.90
  4. Step 4: Simplify right side
    1,120,129,540.70x = 1,695,592,720,476,687,872
  5. Step 5: Solve for x
    x = 1,695,592,720,476,687,872/1,120,129,540.70
  6. Step 6: Final answer
    x = 1,513,746,989.85

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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.