Home / 398,631.72-596,726.46-258,110.76

Finding the Fourth Proportional to 398,631.72, 596,726.46 and 258,110.76

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Solution

The fourth proportional to 398,631.72, 596,726.46 and 258,110.76 is: 386,375.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,631.72 : 596,726.46 = 258,110.76 : x
  2. Step 2: Convert to fraction form
    398,631.72/596,726.46 = 258,110.76/x
  3. Step 3: Cross multiply
    398,631.72x = 596,726.46 × 258,110.76
  4. Step 4: Simplify right side
    398,631.72x = 154,021,520,102.71
  5. Step 5: Solve for x
    x = 154,021,520,102.71/398,631.72
  6. Step 6: Final answer
    x = 386,375.47

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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.