Home / 821,628.45-1,232,906.85-442,541.16

Finding the Fourth Proportional to 821,628.45, 1,232,906.85 and 442,541.16

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Solution

The fourth proportional to 821,628.45, 1,232,906.85 and 442,541.16 is: 664,061.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,628.45 : 1,232,906.85 = 442,541.16 : x
  2. Step 2: Convert to fraction form
    821,628.45/1,232,906.85 = 442,541.16/x
  3. Step 3: Cross multiply
    821,628.45x = 1,232,906.85 × 442,541.16
  4. Step 4: Simplify right side
    821,628.45x = 545,612,027,570.95
  5. Step 5: Solve for x
    x = 545,612,027,570.95/821,628.45
  6. Step 6: Final answer
    x = 664,061.75

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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.