Home / 391,820,007.20-587,792,218.80-133,059,610.40

Finding the Fourth Proportional to 391,820,007.20, 587,792,218.80 and 133,059,610.40

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Solution

The fourth proportional to 391,820,007.20, 587,792,218.80 and 133,059,610.40 is: 199,610,541.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,820,007.20 : 587,792,218.80 = 133,059,610.40 : x
  2. Step 2: Convert to fraction form
    391,820,007.20/587,792,218.80 = 133,059,610.40/x
  3. Step 3: Cross multiply
    391,820,007.20x = 587,792,218.80 × 133,059,610.40
  4. Step 4: Simplify right side
    391,820,007.20x = 78,211,403,629,679,552
  5. Step 5: Solve for x
    x = 78,211,403,629,679,552/391,820,007.20
  6. Step 6: Final answer
    x = 199,610,541.05

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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.