Home / 438,609.57-605,381.19-285,377.43

Finding the Fourth Proportional to 438,609.57, 605,381.19 and 285,377.43

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Solution

The fourth proportional to 438,609.57, 605,381.19 and 285,377.43 is: 393,885.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,609.57 : 605,381.19 = 285,377.43 : x
  2. Step 2: Convert to fraction form
    438,609.57/605,381.19 = 285,377.43/x
  3. Step 3: Cross multiply
    438,609.57x = 605,381.19 × 285,377.43
  4. Step 4: Simplify right side
    438,609.57x = 172,762,128,172.54
  5. Step 5: Solve for x
    x = 172,762,128,172.54/438,609.57
  6. Step 6: Final answer
    x = 393,885.91

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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.