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Finding the Fourth Proportional to 578,920.14, 868,372.38 and 258,987.42

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Solution

The fourth proportional to 578,920.14, 868,372.38 and 258,987.42 is: 388,477.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,920.14 : 868,372.38 = 258,987.42 : x
  2. Step 2: Convert to fraction form
    578,920.14/868,372.38 = 258,987.42/x
  3. Step 3: Cross multiply
    578,920.14x = 868,372.38 × 258,987.42
  4. Step 4: Simplify right side
    578,920.14x = 224,897,522,295.46
  5. Step 5: Solve for x
    x = 224,897,522,295.46/578,920.14
  6. Step 6: Final answer
    x = 388,477.63

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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.