Home / 485,719.40-728,579.10-456,170.60

Finding the Fourth Proportional to 485,719.40, 728,579.10 and 456,170.60

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Solution

The fourth proportional to 485,719.40, 728,579.10 and 456,170.60 is: 684,255.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,719.40 : 728,579.10 = 456,170.60 : x
  2. Step 2: Convert to fraction form
    485,719.40/728,579.10 = 456,170.60/x
  3. Step 3: Cross multiply
    485,719.40x = 728,579.10 × 456,170.60
  4. Step 4: Simplify right side
    485,719.40x = 332,356,365,194.46
  5. Step 5: Solve for x
    x = 332,356,365,194.46/485,719.40
  6. Step 6: Final answer
    x = 684,255.90

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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.