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Finding the Fourth Proportional to 624,718.12, 862,111.56 and 338,238.40

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Solution

The fourth proportional to 624,718.12, 862,111.56 and 338,238.40 is: 466,769.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,718.12 : 862,111.56 = 338,238.40 : x
  2. Step 2: Convert to fraction form
    624,718.12/862,111.56 = 338,238.40/x
  3. Step 3: Cross multiply
    624,718.12x = 862,111.56 × 338,238.40
  4. Step 4: Simplify right side
    624,718.12x = 291,599,234,675.90
  5. Step 5: Solve for x
    x = 291,599,234,675.90/624,718.12
  6. Step 6: Final answer
    x = 466,769.29

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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.