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Finding the Fourth Proportional to 625,658.50, 863,403.60 and 339,171.22

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Solution

The fourth proportional to 625,658.50, 863,403.60 and 339,171.22 is: 468,053.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,658.50 : 863,403.60 = 339,171.22 : x
  2. Step 2: Convert to fraction form
    625,658.50/863,403.60 = 339,171.22/x
  3. Step 3: Cross multiply
    625,658.50x = 863,403.60 × 339,171.22
  4. Step 4: Simplify right side
    625,658.50x = 292,841,652,364.39
  5. Step 5: Solve for x
    x = 292,841,652,364.39/625,658.50
  6. Step 6: Final answer
    x = 468,053.50

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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.