Home / 999,346,107.20-1,379,140,716.39-553,309,456.47

Finding the Fourth Proportional to 999,346,107.20, 1,379,140,716.39 and 553,309,456.47

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Solution

The fourth proportional to 999,346,107.20, 1,379,140,716.39 and 553,309,456.47 is: 763,590,906.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,346,107.20 : 1,379,140,716.39 = 553,309,456.47 : x
  2. Step 2: Convert to fraction form
    999,346,107.20/1,379,140,716.39 = 553,309,456.47/x
  3. Step 3: Cross multiply
    999,346,107.20x = 1,379,140,716.39 × 553,309,456.47
  4. Step 4: Simplify right side
    999,346,107.20x = 763,091,600,181,397,376
  5. Step 5: Solve for x
    x = 763,091,600,181,397,376/999,346,107.20
  6. Step 6: Final answer
    x = 763,590,906.78

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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.