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Finding the Fourth Proportional to 618,226,486.80, 927,339,730.20 and 331,572,022.80

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Solution

The fourth proportional to 618,226,486.80, 927,339,730.20 and 331,572,022.80 is: 497,358,034.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,226,486.80 : 927,339,730.20 = 331,572,022.80 : x
  2. Step 2: Convert to fraction form
    618,226,486.80/927,339,730.20 = 331,572,022.80/x
  3. Step 3: Cross multiply
    618,226,486.80x = 927,339,730.20 × 331,572,022.80
  4. Step 4: Simplify right side
    618,226,486.80x = 307,479,910,165,220,288
  5. Step 5: Solve for x
    x = 307,479,910,165,220,288/618,226,486.80
  6. Step 6: Final answer
    x = 497,358,034.20

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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.