Home / 691,388.40-1,037,082.60-431,799.60

Finding the Fourth Proportional to 691,388.40, 1,037,082.60 and 431,799.60

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Solution

The fourth proportional to 691,388.40, 1,037,082.60 and 431,799.60 is: 647,699.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,388.40 : 1,037,082.60 = 431,799.60 : x
  2. Step 2: Convert to fraction form
    691,388.40/1,037,082.60 = 431,799.60/x
  3. Step 3: Cross multiply
    691,388.40x = 1,037,082.60 × 431,799.60
  4. Step 4: Simplify right side
    691,388.40x = 447,811,851,846.96
  5. Step 5: Solve for x
    x = 447,811,851,846.96/691,388.40
  6. Step 6: Final answer
    x = 647,699.40

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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.