Home / 988,815.80-1,481,255.40-515,767.70

Finding the Fourth Proportional to 988,815.80, 1,481,255.40 and 515,767.70

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Solution

The fourth proportional to 988,815.80, 1,481,255.40 and 515,767.70 is: 772,624.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,815.80 : 1,481,255.40 = 515,767.70 : x
  2. Step 2: Convert to fraction form
    988,815.80/1,481,255.40 = 515,767.70/x
  3. Step 3: Cross multiply
    988,815.80x = 1,481,255.40 × 515,767.70
  4. Step 4: Simplify right side
    988,815.80x = 763,983,690,770.58
  5. Step 5: Solve for x
    x = 763,983,690,770.58/988,815.80
  6. Step 6: Final answer
    x = 772,624.88

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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.