Home / 387,073,711.20-580,610,566.80-131,772,079.20

Finding the Fourth Proportional to 387,073,711.20, 580,610,566.80 and 131,772,079.20

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Solution

The fourth proportional to 387,073,711.20, 580,610,566.80 and 131,772,079.20 is: 197,658,118.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,073,711.20 : 580,610,566.80 = 131,772,079.20 : x
  2. Step 2: Convert to fraction form
    387,073,711.20/580,610,566.80 = 131,772,079.20/x
  3. Step 3: Cross multiply
    387,073,711.20x = 580,610,566.80 × 131,772,079.20
  4. Step 4: Simplify right side
    387,073,711.20x = 76,508,261,592,726,480
  5. Step 5: Solve for x
    x = 76,508,261,592,726,480/387,073,711.20
  6. Step 6: Final answer
    x = 197,658,118.80

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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.