Home / 813,018.20-1,121,872.60-450,351.60

Finding the Fourth Proportional to 813,018.20, 1,121,872.60 and 450,351.60

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Solution

The fourth proportional to 813,018.20, 1,121,872.60 and 450,351.60 is: 621,433.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,018.20 : 1,121,872.60 = 450,351.60 : x
  2. Step 2: Convert to fraction form
    813,018.20/1,121,872.60 = 450,351.60/x
  3. Step 3: Cross multiply
    813,018.20x = 1,121,872.60 × 450,351.60
  4. Step 4: Simplify right side
    813,018.20x = 505,237,120,406.16
  5. Step 5: Solve for x
    x = 505,237,120,406.16/813,018.20
  6. Step 6: Final answer
    x = 621,433.96

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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.