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Finding the Fourth Proportional to 625,908.06, 863,753.22 and 339,426.86

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Solution

The fourth proportional to 625,908.06, 863,753.22 and 339,426.86 is: 468,409.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,908.06 : 863,753.22 = 339,426.86 : x
  2. Step 2: Convert to fraction form
    625,908.06/863,753.22 = 339,426.86/x
  3. Step 3: Cross multiply
    625,908.06x = 863,753.22 × 339,426.86
  4. Step 4: Simplify right side
    625,908.06x = 293,181,038,960.72
  5. Step 5: Solve for x
    x = 293,181,038,960.72/625,908.06
  6. Step 6: Final answer
    x = 468,409.11

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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.