Home / 724,379.70-1,086,564.15-218,939.70

Finding the Fourth Proportional to 724,379.70, 1,086,564.15 and 218,939.70

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Solution

The fourth proportional to 724,379.70, 1,086,564.15 and 218,939.70 is: 328,407.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,379.70 : 1,086,564.15 = 218,939.70 : x
  2. Step 2: Convert to fraction form
    724,379.70/1,086,564.15 = 218,939.70/x
  3. Step 3: Cross multiply
    724,379.70x = 1,086,564.15 × 218,939.70
  4. Step 4: Simplify right side
    724,379.70x = 237,892,029,031.76
  5. Step 5: Solve for x
    x = 237,892,029,031.76/724,379.70
  6. Step 6: Final answer
    x = 328,407.92

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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.