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Finding the Fourth Proportional to 624,616.06, 861,969.98 and 338,135.93

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Solution

The fourth proportional to 624,616.06, 861,969.98 and 338,135.93 is: 466,627.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,616.06 : 861,969.98 = 338,135.93 : x
  2. Step 2: Convert to fraction form
    624,616.06/861,969.98 = 338,135.93/x
  3. Step 3: Cross multiply
    624,616.06x = 861,969.98 × 338,135.93
  4. Step 4: Simplify right side
    624,616.06x = 291,463,019,128.70
  5. Step 5: Solve for x
    x = 291,463,019,128.70/624,616.06
  6. Step 6: Final answer
    x = 466,627.49

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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.