Home / 675,049.40-1,012,574.10-394,422.20

Finding the Fourth Proportional to 675,049.40, 1,012,574.10 and 394,422.20

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Solution

The fourth proportional to 675,049.40, 1,012,574.10 and 394,422.20 is: 591,633.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,049.40 : 1,012,574.10 = 394,422.20 : x
  2. Step 2: Convert to fraction form
    675,049.40/1,012,574.10 = 394,422.20/x
  3. Step 3: Cross multiply
    675,049.40x = 1,012,574.10 × 394,422.20
  4. Step 4: Simplify right side
    675,049.40x = 399,381,704,185.02
  5. Step 5: Solve for x
    x = 399,381,704,185.02/675,049.40
  6. Step 6: Final answer
    x = 591,633.30

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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.