Home / 465,705.89-642,733.55-284,379.66

Finding the Fourth Proportional to 465,705.89, 642,733.55 and 284,379.66

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Solution

The fourth proportional to 465,705.89, 642,733.55 and 284,379.66 is: 392,480.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,705.89 : 642,733.55 = 284,379.66 : x
  2. Step 2: Convert to fraction form
    465,705.89/642,733.55 = 284,379.66/x
  3. Step 3: Cross multiply
    465,705.89x = 642,733.55 × 284,379.66
  4. Step 4: Simplify right side
    465,705.89x = 182,780,348,064.12
  5. Step 5: Solve for x
    x = 182,780,348,064.12/465,705.89
  6. Step 6: Final answer
    x = 392,480.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.