Home / 678,947.92-1,016,870.46-324,210.40

Finding the Fourth Proportional to 678,947.92, 1,016,870.46 and 324,210.40

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Solution

The fourth proportional to 678,947.92, 1,016,870.46 and 324,210.40 is: 485,574.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,947.92 : 1,016,870.46 = 324,210.40 : x
  2. Step 2: Convert to fraction form
    678,947.92/1,016,870.46 = 324,210.40/x
  3. Step 3: Cross multiply
    678,947.92x = 1,016,870.46 × 324,210.40
  4. Step 4: Simplify right side
    678,947.92x = 329,679,978,584.78
  5. Step 5: Solve for x
    x = 329,679,978,584.78/678,947.92
  6. Step 6: Final answer
    x = 485,574.77

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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.