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Finding the Fourth Proportional to 625,663.50, 863,410.50 and 339,176.22

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Solution

The fourth proportional to 625,663.50, 863,410.50 and 339,176.22 is: 468,060.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,663.50 : 863,410.50 = 339,176.22 : x
  2. Step 2: Convert to fraction form
    625,663.50/863,410.50 = 339,176.22/x
  3. Step 3: Cross multiply
    625,663.50x = 863,410.50 × 339,176.22
  4. Step 4: Simplify right side
    625,663.50x = 292,848,309,698.31
  5. Step 5: Solve for x
    x = 292,848,309,698.31/625,663.50
  6. Step 6: Final answer
    x = 468,060.40

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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.