Home / 738,205.86-1,107,997.62-378,646.65

Finding the Fourth Proportional to 738,205.86, 1,107,997.62 and 378,646.65

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Solution

The fourth proportional to 738,205.86, 1,107,997.62 and 378,646.65 is: 568,323.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,205.86 : 1,107,997.62 = 378,646.65 : x
  2. Step 2: Convert to fraction form
    738,205.86/1,107,997.62 = 378,646.65/x
  3. Step 3: Cross multiply
    738,205.86x = 1,107,997.62 × 378,646.65
  4. Step 4: Simplify right side
    738,205.86x = 419,539,587,020.97
  5. Step 5: Solve for x
    x = 419,539,587,020.97/738,205.86
  6. Step 6: Final answer
    x = 568,323.30

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Half scale
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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.