Home / 645,891.12-968,839.29-261,647.24

Finding the Fourth Proportional to 645,891.12, 968,839.29 and 261,647.24

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Solution

The fourth proportional to 645,891.12, 968,839.29 and 261,647.24 is: 392,471.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,891.12 : 968,839.29 = 261,647.24 : x
  2. Step 2: Convert to fraction form
    645,891.12/968,839.29 = 261,647.24/x
  3. Step 3: Cross multiply
    645,891.12x = 968,839.29 × 261,647.24
  4. Step 4: Simplify right side
    645,891.12x = 253,494,124,923.82
  5. Step 5: Solve for x
    x = 253,494,124,923.82/645,891.12
  6. Step 6: Final answer
    x = 392,471.92

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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.