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Finding the Fourth Proportional to 543,672,001.70, 815,508,002.55 and 543,672,001.70

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Solution

The fourth proportional to 543,672,001.70, 815,508,002.55 and 543,672,001.70 is: 815,508,002.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,672,001.70 : 815,508,002.55 = 543,672,001.70 : x
  2. Step 2: Convert to fraction form
    543,672,001.70/815,508,002.55 = 543,672,001.70/x
  3. Step 3: Cross multiply
    543,672,001.70x = 815,508,002.55 × 543,672,001.70
  4. Step 4: Simplify right side
    543,672,001.70x = 443,368,868,148,727,232
  5. Step 5: Solve for x
    x = 443,368,868,148,727,232/543,672,001.70
  6. Step 6: Final answer
    x = 815,508,002.55

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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.