Home / 931,245.78-1,396,868.70-266,397.78

Finding the Fourth Proportional to 931,245.78, 1,396,868.70 and 266,397.78

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Solution

The fourth proportional to 931,245.78, 1,396,868.70 and 266,397.78 is: 399,596.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,245.78 : 1,396,868.70 = 266,397.78 : x
  2. Step 2: Convert to fraction form
    931,245.78/1,396,868.70 = 266,397.78/x
  3. Step 3: Cross multiply
    931,245.78x = 1,396,868.70 × 266,397.78
  4. Step 4: Simplify right side
    931,245.78x = 372,122,720,631.49
  5. Step 5: Solve for x
    x = 372,122,720,631.49/931,245.78
  6. Step 6: Final answer
    x = 399,596.68

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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.