Home / 521,369,103-782,154,362.34-198,227,849.88

Finding the Fourth Proportional to 521,369,103, 782,154,362.34 and 198,227,849.88

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Solution

The fourth proportional to 521,369,103, 782,154,362.34 and 198,227,849.88 is: 297,380,064.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,369,103 : 782,154,362.34 = 198,227,849.88 : x
  2. Step 2: Convert to fraction form
    521,369,103/782,154,362.34 = 198,227,849.88/x
  3. Step 3: Cross multiply
    521,369,103x = 782,154,362.34 × 198,227,849.88
  4. Step 4: Simplify right side
    521,369,103x = 155,044,777,520,920,640
  5. Step 5: Solve for x
    x = 155,044,777,520,920,640/521,369,103
  6. Step 6: Final answer
    x = 297,380,064.58

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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.