Home / 683,841.80-1,026,605.10-431,121.80

Finding the Fourth Proportional to 683,841.80, 1,026,605.10 and 431,121.80

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Solution

The fourth proportional to 683,841.80, 1,026,605.10 and 431,121.80 is: 647,213.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,841.80 : 1,026,605.10 = 431,121.80 : x
  2. Step 2: Convert to fraction form
    683,841.80/1,026,605.10 = 431,121.80/x
  3. Step 3: Cross multiply
    683,841.80x = 1,026,605.10 × 431,121.80
  4. Step 4: Simplify right side
    683,841.80x = 442,591,838,601.18
  5. Step 5: Solve for x
    x = 442,591,838,601.18/683,841.80
  6. Step 6: Final answer
    x = 647,213.78

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1.5x scale

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.