Home / 652,981.50-979,472.10-428,290.03

Finding the Fourth Proportional to 652,981.50, 979,472.10 and 428,290.03

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Solution

The fourth proportional to 652,981.50, 979,472.10 and 428,290.03 is: 642,434.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,981.50 : 979,472.10 = 428,290.03 : x
  2. Step 2: Convert to fraction form
    652,981.50/979,472.10 = 428,290.03/x
  3. Step 3: Cross multiply
    652,981.50x = 979,472.10 × 428,290.03
  4. Step 4: Simplify right side
    652,981.50x = 419,498,135,514.46
  5. Step 5: Solve for x
    x = 419,498,135,514.46/652,981.50
  6. Step 6: Final answer
    x = 642,434.95

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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.