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Finding the Fourth Proportional to 622,630.48, 859,294.65 and 381,073.90

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Solution

The fourth proportional to 622,630.48, 859,294.65 and 381,073.90 is: 525,921.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,630.48 : 859,294.65 = 381,073.90 : x
  2. Step 2: Convert to fraction form
    622,630.48/859,294.65 = 381,073.90/x
  3. Step 3: Cross multiply
    622,630.48x = 859,294.65 × 381,073.90
  4. Step 4: Simplify right side
    622,630.48x = 327,454,763,344.83
  5. Step 5: Solve for x
    x = 327,454,763,344.83/622,630.48
  6. Step 6: Final answer
    x = 525,921.51

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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.