Home / 1,288,865.74-1,930,353.66-615,418.73

Finding the Fourth Proportional to 1,288,865.74, 1,930,353.66 and 615,418.73

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Solution

The fourth proportional to 1,288,865.74, 1,930,353.66 and 615,418.73 is: 921,721.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,865.74 : 1,930,353.66 = 615,418.73 : x
  2. Step 2: Convert to fraction form
    1,288,865.74/1,930,353.66 = 615,418.73/x
  3. Step 3: Cross multiply
    1,288,865.74x = 1,930,353.66 × 615,418.73
  4. Step 4: Simplify right side
    1,288,865.74x = 1,187,975,795,475.11
  5. Step 5: Solve for x
    x = 1,187,975,795,475.11/1,288,865.74
  6. Step 6: Final answer
    x = 921,721.91

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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.