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Finding the Fourth Proportional to 460,201.80, 687,016.77 and 389,323.56

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Solution

The fourth proportional to 460,201.80, 687,016.77 and 389,323.56 is: 581,205.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,201.80 : 687,016.77 = 389,323.56 : x
  2. Step 2: Convert to fraction form
    460,201.80/687,016.77 = 389,323.56/x
  3. Step 3: Cross multiply
    460,201.80x = 687,016.77 × 389,323.56
  4. Step 4: Simplify right side
    460,201.80x = 267,471,814,676.10
  5. Step 5: Solve for x
    x = 267,471,814,676.10/460,201.80
  6. Step 6: Final answer
    x = 581,205.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.