Home / 325,327.80-485,777.25-287,058.14

Finding the Fourth Proportional to 325,327.80, 485,777.25 and 287,058.14

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Solution

The fourth proportional to 325,327.80, 485,777.25 and 287,058.14 is: 428,633.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,327.80 : 485,777.25 = 287,058.14 : x
  2. Step 2: Convert to fraction form
    325,327.80/485,777.25 = 287,058.14/x
  3. Step 3: Cross multiply
    325,327.80x = 485,777.25 × 287,058.14
  4. Step 4: Simplify right side
    325,327.80x = 139,446,309,975.14
  5. Step 5: Solve for x
    x = 139,446,309,975.14/325,327.80
  6. Step 6: Final answer
    x = 428,633.24

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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.