Home / 805,120,112.20-1,207,680,168.30-726,041,691.40

Finding the Fourth Proportional to 805,120,112.20, 1,207,680,168.30 and 726,041,691.40

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Solution

The fourth proportional to 805,120,112.20, 1,207,680,168.30 and 726,041,691.40 is: 1,089,062,537.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,120,112.20 : 1,207,680,168.30 = 726,041,691.40 : x
  2. Step 2: Convert to fraction form
    805,120,112.20/1,207,680,168.30 = 726,041,691.40/x
  3. Step 3: Cross multiply
    805,120,112.20x = 1,207,680,168.30 × 726,041,691.40
  4. Step 4: Simplify right side
    805,120,112.20x = 876,826,152,062,768,640
  5. Step 5: Solve for x
    x = 876,826,152,062,768,640/805,120,112.20
  6. Step 6: Final answer
    x = 1,089,062,537.10

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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.