Home / 398,699,892.90-550,205,872.83-220,083,828.48

Finding the Fourth Proportional to 398,699,892.90, 550,205,872.83 and 220,083,828.48

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Solution

The fourth proportional to 398,699,892.90, 550,205,872.83 and 220,083,828.48 is: 303,715,694.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,699,892.90 : 550,205,872.83 = 220,083,828.48 : x
  2. Step 2: Convert to fraction form
    398,699,892.90/550,205,872.83 = 220,083,828.48/x
  3. Step 3: Cross multiply
    398,699,892.90x = 550,205,872.83 × 220,083,828.48
  4. Step 4: Simplify right side
    398,699,892.90x = 121,091,414,944,606,416
  5. Step 5: Solve for x
    x = 121,091,414,944,606,416/398,699,892.90
  6. Step 6: Final answer
    x = 303,715,694.69

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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.