Home / 1,307,109.30-1,960,665.57-408,555.65

Finding the Fourth Proportional to 1,307,109.30, 1,960,665.57 and 408,555.65

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Solution

The fourth proportional to 1,307,109.30, 1,960,665.57 and 408,555.65 is: 612,833.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307,109.30 : 1,960,665.57 = 408,555.65 : x
  2. Step 2: Convert to fraction form
    1,307,109.30/1,960,665.57 = 408,555.65/x
  3. Step 3: Cross multiply
    1,307,109.30x = 1,960,665.57 × 408,555.65
  4. Step 4: Simplify right side
    1,307,109.30x = 801,040,986,580.64
  5. Step 5: Solve for x
    x = 801,040,986,580.64/1,307,109.30
  6. Step 6: Final answer
    x = 612,833.97

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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.