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Finding the Fourth Proportional to 485,662.60, 728,493.90 and 275,710.60

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Solution

The fourth proportional to 485,662.60, 728,493.90 and 275,710.60 is: 413,565.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,662.60 : 728,493.90 = 275,710.60 : x
  2. Step 2: Convert to fraction form
    485,662.60/728,493.90 = 275,710.60/x
  3. Step 3: Cross multiply
    485,662.60x = 728,493.90 × 275,710.60
  4. Step 4: Simplify right side
    485,662.60x = 200,853,490,265.34
  5. Step 5: Solve for x
    x = 200,853,490,265.34/485,662.60
  6. Step 6: Final answer
    x = 413,565.90

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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.