Home / 678,953.13-1,016,879.65-324,216.26

Finding the Fourth Proportional to 678,953.13, 1,016,879.65 and 324,216.26

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Solution

The fourth proportional to 678,953.13, 1,016,879.65 and 324,216.26 is: 485,584.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,953.13 : 1,016,879.65 = 324,216.26 : x
  2. Step 2: Convert to fraction form
    678,953.13/1,016,879.65 = 324,216.26/x
  3. Step 3: Cross multiply
    678,953.13x = 1,016,879.65 × 324,216.26
  4. Step 4: Simplify right side
    678,953.13x = 329,688,916,993.11
  5. Step 5: Solve for x
    x = 329,688,916,993.11/678,953.13
  6. Step 6: Final answer
    x = 485,584.21

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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.