Home / 827,012.92-1,240,768.44-258,371.08

Finding the Fourth Proportional to 827,012.92, 1,240,768.44 and 258,371.08

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Solution

The fourth proportional to 827,012.92, 1,240,768.44 and 258,371.08 is: 387,634.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,012.92 : 1,240,768.44 = 258,371.08 : x
  2. Step 2: Convert to fraction form
    827,012.92/1,240,768.44 = 258,371.08/x
  3. Step 3: Cross multiply
    827,012.92x = 1,240,768.44 × 258,371.08
  4. Step 4: Simplify right side
    827,012.92x = 320,578,681,872.72
  5. Step 5: Solve for x
    x = 320,578,681,872.72/827,012.92
  6. Step 6: Final answer
    x = 387,634.43

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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.