Home / 987,230.85-1,479,726.79-453,649.32

Finding the Fourth Proportional to 987,230.85, 1,479,726.79 and 453,649.32

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Solution

The fourth proportional to 987,230.85, 1,479,726.79 and 453,649.32 is: 679,959.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,230.85 : 1,479,726.79 = 453,649.32 : x
  2. Step 2: Convert to fraction form
    987,230.85/1,479,726.79 = 453,649.32/x
  3. Step 3: Cross multiply
    987,230.85x = 1,479,726.79 × 453,649.32
  4. Step 4: Simplify right side
    987,230.85x = 671,277,052,069.28
  5. Step 5: Solve for x
    x = 671,277,052,069.28/987,230.85
  6. Step 6: Final answer
    x = 679,959.56

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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.