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Finding the Fourth Proportional to 625,889.85, 863,728.23 and 339,409.86

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Solution

The fourth proportional to 625,889.85, 863,728.23 and 339,409.86 is: 468,385.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,889.85 : 863,728.23 = 339,409.86 : x
  2. Step 2: Convert to fraction form
    625,889.85/863,728.23 = 339,409.86/x
  3. Step 3: Cross multiply
    625,889.85x = 863,728.23 × 339,409.86
  4. Step 4: Simplify right side
    625,889.85x = 293,157,877,622.35
  5. Step 5: Solve for x
    x = 293,157,877,622.35/625,889.85
  6. Step 6: Final answer
    x = 468,385.74

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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.