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Finding the Fourth Proportional to 625,649.40, 863,400.60 and 339,174

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Solution

The fourth proportional to 625,649.40, 863,400.60 and 339,174 is: 468,062.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,649.40 : 863,400.60 = 339,174 : x
  2. Step 2: Convert to fraction form
    625,649.40/863,400.60 = 339,174/x
  3. Step 3: Cross multiply
    625,649.40x = 863,400.60 × 339,174
  4. Step 4: Simplify right side
    625,649.40x = 292,843,035,104.40
  5. Step 5: Solve for x
    x = 292,843,035,104.40/625,649.40
  6. Step 6: Final answer
    x = 468,062.52

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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.