Home / 725,151.20-1,087,726.80-458,045.60

Finding the Fourth Proportional to 725,151.20, 1,087,726.80 and 458,045.60

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Solution

The fourth proportional to 725,151.20, 1,087,726.80 and 458,045.60 is: 687,068.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,151.20 : 1,087,726.80 = 458,045.60 : x
  2. Step 2: Convert to fraction form
    725,151.20/1,087,726.80 = 458,045.60/x
  3. Step 3: Cross multiply
    725,151.20x = 1,087,726.80 × 458,045.60
  4. Step 4: Simplify right side
    725,151.20x = 498,228,474,742.08
  5. Step 5: Solve for x
    x = 498,228,474,742.08/725,151.20
  6. Step 6: Final answer
    x = 687,068.40

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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.