Home / 691,780.18-1,037,338.10-392,180.30

Finding the Fourth Proportional to 691,780.18, 1,037,338.10 and 392,180.30

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Solution

The fourth proportional to 691,780.18, 1,037,338.10 and 392,180.30 is: 588,082.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,780.18 : 1,037,338.10 = 392,180.30 : x
  2. Step 2: Convert to fraction form
    691,780.18/1,037,338.10 = 392,180.30/x
  3. Step 3: Cross multiply
    691,780.18x = 1,037,338.10 × 392,180.30
  4. Step 4: Simplify right side
    691,780.18x = 406,823,567,259.43
  5. Step 5: Solve for x
    x = 406,823,567,259.43/691,780.18
  6. Step 6: Final answer
    x = 588,082.14

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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.