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Finding the Fourth Proportional to 622,672.62, 859,352.94 and 381,116.04

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Solution

The fourth proportional to 622,672.62, 859,352.94 and 381,116.04 is: 525,979.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,672.62 : 859,352.94 = 381,116.04 : x
  2. Step 2: Convert to fraction form
    622,672.62/859,352.94 = 381,116.04/x
  3. Step 3: Cross multiply
    622,672.62x = 859,352.94 × 381,116.04
  4. Step 4: Simplify right side
    622,672.62x = 327,513,189,455.16
  5. Step 5: Solve for x
    x = 327,513,189,455.16/622,672.62
  6. Step 6: Final answer
    x = 525,979.75

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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.