Home / 998,340.78-1,377,710.33-545,631.78

Finding the Fourth Proportional to 998,340.78, 1,377,710.33 and 545,631.78

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Solution

The fourth proportional to 998,340.78, 1,377,710.33 and 545,631.78 is: 752,971.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,340.78 : 1,377,710.33 = 545,631.78 : x
  2. Step 2: Convert to fraction form
    998,340.78/1,377,710.33 = 545,631.78/x
  3. Step 3: Cross multiply
    998,340.78x = 1,377,710.33 × 545,631.78
  4. Step 4: Simplify right side
    998,340.78x = 751,722,536,954.13
  5. Step 5: Solve for x
    x = 751,722,536,954.13/998,340.78
  6. Step 6: Final answer
    x = 752,971.88

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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.