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Finding the Fourth Proportional to 485,069.22, 664,548 and 466,887.90

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Solution

The fourth proportional to 485,069.22, 664,548 and 466,887.90 is: 639,639.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,069.22 : 664,548 = 466,887.90 : x
  2. Step 2: Convert to fraction form
    485,069.22/664,548 = 466,887.90/x
  3. Step 3: Cross multiply
    485,069.22x = 664,548 × 466,887.90
  4. Step 4: Simplify right side
    485,069.22x = 310,269,420,169.20
  5. Step 5: Solve for x
    x = 310,269,420,169.20/485,069.22
  6. Step 6: Final answer
    x = 639,639.47

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.