Home / 839,694.30-1,259,541.45-278,728.80

Finding the Fourth Proportional to 839,694.30, 1,259,541.45 and 278,728.80

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Solution

The fourth proportional to 839,694.30, 1,259,541.45 and 278,728.80 is: 418,093.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,694.30 : 1,259,541.45 = 278,728.80 : x
  2. Step 2: Convert to fraction form
    839,694.30/1,259,541.45 = 278,728.80/x
  3. Step 3: Cross multiply
    839,694.30x = 1,259,541.45 × 278,728.80
  4. Step 4: Simplify right side
    839,694.30x = 351,070,476,908.76
  5. Step 5: Solve for x
    x = 351,070,476,908.76/839,694.30
  6. Step 6: Final answer
    x = 418,093.20

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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.