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Finding the Fourth Proportional to 488,986.80, 733,480.20 and 485,876.40

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Solution

The fourth proportional to 488,986.80, 733,480.20 and 485,876.40 is: 728,814.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,986.80 : 733,480.20 = 485,876.40 : x
  2. Step 2: Convert to fraction form
    488,986.80/733,480.20 = 485,876.40/x
  3. Step 3: Cross multiply
    488,986.80x = 733,480.20 × 485,876.40
  4. Step 4: Simplify right side
    488,986.80x = 356,380,719,047.28
  5. Step 5: Solve for x
    x = 356,380,719,047.28/488,986.80
  6. Step 6: Final answer
    x = 728,814.60

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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.