Home / 839,114.70-1,258,672.05-278,149.20

Finding the Fourth Proportional to 839,114.70, 1,258,672.05 and 278,149.20

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Solution

The fourth proportional to 839,114.70, 1,258,672.05 and 278,149.20 is: 417,223.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,114.70 : 1,258,672.05 = 278,149.20 : x
  2. Step 2: Convert to fraction form
    839,114.70/1,258,672.05 = 278,149.20/x
  3. Step 3: Cross multiply
    839,114.70x = 1,258,672.05 × 278,149.20
  4. Step 4: Simplify right side
    839,114.70x = 350,098,623,769.86
  5. Step 5: Solve for x
    x = 350,098,623,769.86/839,114.70
  6. Step 6: Final answer
    x = 417,223.80

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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.