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Finding the Third Proportional to 392,898,785 and 654,791,844.50

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Solution

The third proportional to 392,898,785 and 654,791,844.50 is: 1,091,253,971.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,898,785 : 654,791,844.50 = 654,791,844.50 : x
  2. Step 2: Convert to fraction form
    392,898,785/654,791,844.50 = 654,791,844.50/x
  3. Step 3: Cross multiply
    392,898,785x = 654,791,844.50 × 654,791,844.50
  4. Step 4: Simplify right side
    392,898,785x = 428,752,359,623,712,192
  5. Step 5: Solve for x
    x = 428,752,359,623,712,192/392,898,785
  6. Step 6: Final answer
    x = 1,091,253,971.74

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.