Home / 431,204.20-646,806.30-424,205.80

Finding the Fourth Proportional to 431,204.20, 646,806.30 and 424,205.80

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Solution

The fourth proportional to 431,204.20, 646,806.30 and 424,205.80 is: 636,308.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,204.20 : 646,806.30 = 424,205.80 : x
  2. Step 2: Convert to fraction form
    431,204.20/646,806.30 = 424,205.80/x
  3. Step 3: Cross multiply
    431,204.20x = 646,806.30 × 424,205.80
  4. Step 4: Simplify right side
    431,204.20x = 274,378,983,936.54
  5. Step 5: Solve for x
    x = 274,378,983,936.54/431,204.20
  6. Step 6: Final answer
    x = 636,308.70

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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.