Home / 1,378,316.06-2,067,474.18-431,760.50

Finding the Fourth Proportional to 1,378,316.06, 2,067,474.18 and 431,760.50

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Solution

The fourth proportional to 1,378,316.06, 2,067,474.18 and 431,760.50 is: 647,640.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,316.06 : 2,067,474.18 = 431,760.50 : x
  2. Step 2: Convert to fraction form
    1,378,316.06/2,067,474.18 = 431,760.50/x
  3. Step 3: Cross multiply
    1,378,316.06x = 2,067,474.18 × 431,760.50
  4. Step 4: Simplify right side
    1,378,316.06x = 892,653,685,693.89
  5. Step 5: Solve for x
    x = 892,653,685,693.89/1,378,316.06
  6. Step 6: Final answer
    x = 647,640.78

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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.