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Finding the Fourth Proportional to 622,781.84, 859,502.42 and 381,224.04

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Solution

The fourth proportional to 622,781.84, 859,502.42 and 381,224.04 is: 526,128.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,781.84 : 859,502.42 = 381,224.04 : x
  2. Step 2: Convert to fraction form
    622,781.84/859,502.42 = 381,224.04/x
  3. Step 3: Cross multiply
    622,781.84x = 859,502.42 × 381,224.04
  4. Step 4: Simplify right side
    622,781.84x = 327,662,984,942.18
  5. Step 5: Solve for x
    x = 327,662,984,942.18/622,781.84
  6. Step 6: Final answer
    x = 526,128.03

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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.