Home / 738,679.05-1,107,198.45-289,250.55

Finding the Fourth Proportional to 738,679.05, 1,107,198.45 and 289,250.55

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Solution

The fourth proportional to 738,679.05, 1,107,198.45 and 289,250.55 is: 433,554.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,679.05 : 1,107,198.45 = 289,250.55 : x
  2. Step 2: Convert to fraction form
    738,679.05/1,107,198.45 = 289,250.55/x
  3. Step 3: Cross multiply
    738,679.05x = 1,107,198.45 × 289,250.55
  4. Step 4: Simplify right side
    738,679.05x = 320,257,760,621.65
  5. Step 5: Solve for x
    x = 320,257,760,621.65/738,679.05
  6. Step 6: Final answer
    x = 433,554.68

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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.