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Finding the Fourth Proportional to 485,201.60, 726,765.60 and 402,257.60

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Solution

The fourth proportional to 485,201.60, 726,765.60 and 402,257.60 is: 602,526.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,201.60 : 726,765.60 = 402,257.60 : x
  2. Step 2: Convert to fraction form
    485,201.60/726,765.60 = 402,257.60/x
  3. Step 3: Cross multiply
    485,201.60x = 726,765.60 × 402,257.60
  4. Step 4: Simplify right side
    485,201.60x = 292,346,986,018.56
  5. Step 5: Solve for x
    x = 292,346,986,018.56/485,201.60
  6. Step 6: Final answer
    x = 602,526.84

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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.