Home / 814,320.82-1,220,686.80-387,742.07

Finding the Fourth Proportional to 814,320.82, 1,220,686.80 and 387,742.07

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Solution

The fourth proportional to 814,320.82, 1,220,686.80 and 387,742.07 is: 581,234.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,320.82 : 1,220,686.80 = 387,742.07 : x
  2. Step 2: Convert to fraction form
    814,320.82/1,220,686.80 = 387,742.07/x
  3. Step 3: Cross multiply
    814,320.82x = 1,220,686.80 × 387,742.07
  4. Step 4: Simplify right side
    814,320.82x = 473,311,620,550.24
  5. Step 5: Solve for x
    x = 473,311,620,550.24/814,320.82
  6. Step 6: Final answer
    x = 581,234.83

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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.