Home / 7,680,129.60-11,520,194.40-4,656,820.80

Finding the Fourth Proportional to 7,680,129.60, 11,520,194.40 and 4,656,820.80

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Solution

The fourth proportional to 7,680,129.60, 11,520,194.40 and 4,656,820.80 is: 6,985,231.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680,129.60 : 11,520,194.40 = 4,656,820.80 : x
  2. Step 2: Convert to fraction form
    7,680,129.60/11,520,194.40 = 4,656,820.80/x
  3. Step 3: Cross multiply
    7,680,129.60x = 11,520,194.40 × 4,656,820.80
  4. Step 4: Simplify right side
    7,680,129.60x = 53,647,480,901,963.52
  5. Step 5: Solve for x
    x = 53,647,480,901,963.52/7,680,129.60
  6. Step 6: Final answer
    x = 6,985,231.20

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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.