Home / 678,742.27-1,016,563.37-324,005.40

Finding the Fourth Proportional to 678,742.27, 1,016,563.37 and 324,005.40

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Solution

The fourth proportional to 678,742.27, 1,016,563.37 and 324,005.40 is: 485,268.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,742.27 : 1,016,563.37 = 324,005.40 : x
  2. Step 2: Convert to fraction form
    678,742.27/1,016,563.37 = 324,005.40/x
  3. Step 3: Cross multiply
    678,742.27x = 1,016,563.37 × 324,005.40
  4. Step 4: Simplify right side
    678,742.27x = 329,372,024,729.30
  5. Step 5: Solve for x
    x = 329,372,024,729.30/678,742.27
  6. Step 6: Final answer
    x = 485,268.18

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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.