Home / 678,742.31-1,016,563.42-324,005.44

Finding the Fourth Proportional to 678,742.31, 1,016,563.42 and 324,005.44

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Solution

The fourth proportional to 678,742.31, 1,016,563.42 and 324,005.44 is: 485,268.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,742.31 : 1,016,563.42 = 324,005.44 : x
  2. Step 2: Convert to fraction form
    678,742.31/1,016,563.42 = 324,005.44/x
  3. Step 3: Cross multiply
    678,742.31x = 1,016,563.42 × 324,005.44
  4. Step 4: Simplify right side
    678,742.31x = 329,372,071,482.16
  5. Step 5: Solve for x
    x = 329,372,071,482.16/678,742.31
  6. Step 6: Final answer
    x = 485,268.22

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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.