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Finding the Fourth Proportional to 626,440.42, 864,488.33 and 339,960.48

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Solution

The fourth proportional to 626,440.42, 864,488.33 and 339,960.48 is: 469,145.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,440.42 : 864,488.33 = 339,960.48 : x
  2. Step 2: Convert to fraction form
    626,440.42/864,488.33 = 339,960.48/x
  3. Step 3: Cross multiply
    626,440.42x = 864,488.33 × 339,960.48
  4. Step 4: Simplify right side
    626,440.42x = 293,891,867,621.20
  5. Step 5: Solve for x
    x = 293,891,867,621.20/626,440.42
  6. Step 6: Final answer
    x = 469,145.76

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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.