Home / 839,872.80-1,259,809.20-278,907.30

Finding the Fourth Proportional to 839,872.80, 1,259,809.20 and 278,907.30

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Solution

The fourth proportional to 839,872.80, 1,259,809.20 and 278,907.30 is: 418,360.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,872.80 : 1,259,809.20 = 278,907.30 : x
  2. Step 2: Convert to fraction form
    839,872.80/1,259,809.20 = 278,907.30/x
  3. Step 3: Cross multiply
    839,872.80x = 1,259,809.20 × 278,907.30
  4. Step 4: Simplify right side
    839,872.80x = 351,369,982,487.16
  5. Step 5: Solve for x
    x = 351,369,982,487.16/839,872.80
  6. Step 6: Final answer
    x = 418,360.95

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Similar ratio
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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.