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Finding the Fourth Proportional to 891,120,156, 1,336,953,900.48 and 425,375,892.96

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Solution

The fourth proportional to 891,120,156, 1,336,953,900.48 and 425,375,892.96 is: 638,194,474.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,120,156 : 1,336,953,900.48 = 425,375,892.96 : x
  2. Step 2: Convert to fraction form
    891,120,156/1,336,953,900.48 = 425,375,892.96/x
  3. Step 3: Cross multiply
    891,120,156x = 1,336,953,900.48 × 425,375,892.96
  4. Step 4: Simplify right side
    891,120,156x = 568,707,959,263,034,944
  5. Step 5: Solve for x
    x = 568,707,959,263,034,944/891,120,156
  6. Step 6: Final answer
    x = 638,194,474.04

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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.