Home / 839,701.80-1,259,552.70-278,736.30

Finding the Fourth Proportional to 839,701.80, 1,259,552.70 and 278,736.30

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Solution

The fourth proportional to 839,701.80, 1,259,552.70 and 278,736.30 is: 418,104.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,701.80 : 1,259,552.70 = 278,736.30 : x
  2. Step 2: Convert to fraction form
    839,701.80/1,259,552.70 = 278,736.30/x
  3. Step 3: Cross multiply
    839,701.80x = 1,259,552.70 × 278,736.30
  4. Step 4: Simplify right side
    839,701.80x = 351,083,059,253.01
  5. Step 5: Solve for x
    x = 351,083,059,253.01/839,701.80
  6. Step 6: Final answer
    x = 418,104.45

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Double scale
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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.