Home / 839,196.30-1,258,794.45-278,230.80

Finding the Fourth Proportional to 839,196.30, 1,258,794.45 and 278,230.80

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Solution

The fourth proportional to 839,196.30, 1,258,794.45 and 278,230.80 is: 417,346.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,196.30 : 1,258,794.45 = 278,230.80 : x
  2. Step 2: Convert to fraction form
    839,196.30/1,258,794.45 = 278,230.80/x
  3. Step 3: Cross multiply
    839,196.30x = 1,258,794.45 × 278,230.80
  4. Step 4: Simplify right side
    839,196.30x = 350,235,386,859.06
  5. Step 5: Solve for x
    x = 350,235,386,859.06/839,196.30
  6. Step 6: Final answer
    x = 417,346.20

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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.