Home / 722,339,780.20-996,833,998.51-392,314,919.20

Finding the Fourth Proportional to 722,339,780.20, 996,833,998.51 and 392,314,919.20

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Solution

The fourth proportional to 722,339,780.20, 996,833,998.51 and 392,314,919.20 is: 541,397,359.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,339,780.20 : 996,833,998.51 = 392,314,919.20 : x
  2. Step 2: Convert to fraction form
    722,339,780.20/996,833,998.51 = 392,314,919.20/x
  3. Step 3: Cross multiply
    722,339,780.20x = 996,833,998.51 × 392,314,919.20
  4. Step 4: Simplify right side
    722,339,780.20x = 391,072,849,581,263,552
  5. Step 5: Solve for x
    x = 391,072,849,581,263,552/722,339,780.20
  6. Step 6: Final answer
    x = 541,397,359.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.