Home / 811,338.80-1,217,123.40-250,314.80

Finding the Fourth Proportional to 811,338.80, 1,217,123.40 and 250,314.80

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Solution

The fourth proportional to 811,338.80, 1,217,123.40 and 250,314.80 is: 375,507.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,338.80 : 1,217,123.40 = 250,314.80 : x
  2. Step 2: Convert to fraction form
    811,338.80/1,217,123.40 = 250,314.80/x
  3. Step 3: Cross multiply
    811,338.80x = 1,217,123.40 × 250,314.80
  4. Step 4: Simplify right side
    811,338.80x = 304,664,000,446.32
  5. Step 5: Solve for x
    x = 304,664,000,446.32/811,338.80
  6. Step 6: Final answer
    x = 375,507.74

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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.