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Finding the Fourth Proportional to 624,992.11, 862,490.49 and 338,512.25

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Solution

The fourth proportional to 624,992.11, 862,490.49 and 338,512.25 is: 467,147.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,992.11 : 862,490.49 = 338,512.25 : x
  2. Step 2: Convert to fraction form
    624,992.11/862,490.49 = 338,512.25/x
  3. Step 3: Cross multiply
    624,992.11x = 862,490.49 × 338,512.25
  4. Step 4: Simplify right side
    624,992.11x = 291,963,596,373.50
  5. Step 5: Solve for x
    x = 291,963,596,373.50/624,992.11
  6. Step 6: Final answer
    x = 467,147.65

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1.5x scale

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.