Home / 812,787.21-1,121,597.01-450,189.90

Finding the Fourth Proportional to 812,787.21, 1,121,597.01 and 450,189.90

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Solution

The fourth proportional to 812,787.21, 1,121,597.01 and 450,189.90 is: 621,234.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,787.21 : 1,121,597.01 = 450,189.90 : x
  2. Step 2: Convert to fraction form
    812,787.21/1,121,597.01 = 450,189.90/x
  3. Step 3: Cross multiply
    812,787.21x = 1,121,597.01 × 450,189.90
  4. Step 4: Simplify right side
    812,787.21x = 504,931,645,772.20
  5. Step 5: Solve for x
    x = 504,931,645,772.20/812,787.21
  6. Step 6: Final answer
    x = 621,234.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.