Home / 839,289.70-1,258,800.90-278,324.20

Finding the Fourth Proportional to 839,289.70, 1,258,800.90 and 278,324.20

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Solution

The fourth proportional to 839,289.70, 1,258,800.90 and 278,324.20 is: 417,441.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,289.70 : 1,258,800.90 = 278,324.20 : x
  2. Step 2: Convert to fraction form
    839,289.70/1,258,800.90 = 278,324.20/x
  3. Step 3: Cross multiply
    839,289.70x = 1,258,800.90 × 278,324.20
  4. Step 4: Simplify right side
    839,289.70x = 350,354,753,451.78
  5. Step 5: Solve for x
    x = 350,354,753,451.78/839,289.70
  6. Step 6: Final answer
    x = 417,441.98

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Double scale
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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.