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Finding the Fourth Proportional to 622,658.40, 934,279.20 and 323,476.80

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Solution

The fourth proportional to 622,658.40, 934,279.20 and 323,476.80 is: 485,366.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,658.40 : 934,279.20 = 323,476.80 : x
  2. Step 2: Convert to fraction form
    622,658.40/934,279.20 = 323,476.80/x
  3. Step 3: Cross multiply
    622,658.40x = 934,279.20 × 323,476.80
  4. Step 4: Simplify right side
    622,658.40x = 302,217,645,922.56
  5. Step 5: Solve for x
    x = 302,217,645,922.56/622,658.40
  6. Step 6: Final answer
    x = 485,366.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.