Home / 766,761.90-1,058,138.55-422,610.36

Finding the Fourth Proportional to 766,761.90, 1,058,138.55 and 422,610.36

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Solution

The fourth proportional to 766,761.90, 1,058,138.55 and 422,610.36 is: 583,206.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,761.90 : 1,058,138.55 = 422,610.36 : x
  2. Step 2: Convert to fraction form
    766,761.90/1,058,138.55 = 422,610.36/x
  3. Step 3: Cross multiply
    766,761.90x = 1,058,138.55 × 422,610.36
  4. Step 4: Simplify right side
    766,761.90x = 447,180,313,545.38
  5. Step 5: Solve for x
    x = 447,180,313,545.38/766,761.90
  6. Step 6: Final answer
    x = 583,206.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.