Home / 839,205.83-1,258,807.30-208,119.65

Finding the Fourth Proportional to 839,205.83, 1,258,807.30 and 208,119.65

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Solution

The fourth proportional to 839,205.83, 1,258,807.30 and 208,119.65 is: 312,179.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,205.83 : 1,258,807.30 = 208,119.65 : x
  2. Step 2: Convert to fraction form
    839,205.83/1,258,807.30 = 208,119.65/x
  3. Step 3: Cross multiply
    839,205.83x = 1,258,807.30 × 208,119.65
  4. Step 4: Simplify right side
    839,205.83x = 261,982,527,879.11
  5. Step 5: Solve for x
    x = 261,982,527,879.11/839,205.83
  6. Step 6: Final answer
    x = 312,179.11

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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.