Home / 521,368,711.50-782,153,775.09-198,227,458.38

Finding the Fourth Proportional to 521,368,711.50, 782,153,775.09 and 198,227,458.38

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Solution

The fourth proportional to 521,368,711.50, 782,153,775.09 and 198,227,458.38 is: 297,379,477.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,368,711.50 : 782,153,775.09 = 198,227,458.38 : x
  2. Step 2: Convert to fraction form
    521,368,711.50/782,153,775.09 = 198,227,458.38/x
  3. Step 3: Cross multiply
    521,368,711.50x = 782,153,775.09 × 198,227,458.38
  4. Step 4: Simplify right side
    521,368,711.50x = 155,044,354,898,412,864
  5. Step 5: Solve for x
    x = 155,044,354,898,412,864/521,368,711.50
  6. Step 6: Final answer
    x = 297,379,477.28

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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.