Home / 683,859.80-1,026,632.10-431,139.80

Finding the Fourth Proportional to 683,859.80, 1,026,632.10 and 431,139.80

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Solution

The fourth proportional to 683,859.80, 1,026,632.10 and 431,139.80 is: 647,240.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,859.80 : 1,026,632.10 = 431,139.80 : x
  2. Step 2: Convert to fraction form
    683,859.80/1,026,632.10 = 431,139.80/x
  3. Step 3: Cross multiply
    683,859.80x = 1,026,632.10 × 431,139.80
  4. Step 4: Simplify right side
    683,859.80x = 442,621,958,267.58
  5. Step 5: Solve for x
    x = 442,621,958,267.58/683,859.80
  6. Step 6: Final answer
    x = 647,240.79

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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.