Home / 391,631,812.40-587,447,718.60-187,558,468.40

Finding the Fourth Proportional to 391,631,812.40, 587,447,718.60 and 187,558,468.40

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Solution

The fourth proportional to 391,631,812.40, 587,447,718.60 and 187,558,468.40 is: 281,337,702.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,631,812.40 : 587,447,718.60 = 187,558,468.40 : x
  2. Step 2: Convert to fraction form
    391,631,812.40/587,447,718.60 = 187,558,468.40/x
  3. Step 3: Cross multiply
    391,631,812.40x = 587,447,718.60 × 187,558,468.40
  4. Step 4: Simplify right side
    391,631,812.40x = 110,180,794,365,690,208
  5. Step 5: Solve for x
    x = 110,180,794,365,690,208/391,631,812.40
  6. Step 6: Final answer
    x = 281,337,702.60

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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.