Home / 766,868.40-1,058,339.30-422,765.48

Finding the Fourth Proportional to 766,868.40, 1,058,339.30 and 422,765.48

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Solution

The fourth proportional to 766,868.40, 1,058,339.30 and 422,765.48 is: 583,449.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,868.40 : 1,058,339.30 = 422,765.48 : x
  2. Step 2: Convert to fraction form
    766,868.40/1,058,339.30 = 422,765.48/x
  3. Step 3: Cross multiply
    766,868.40x = 1,058,339.30 × 422,765.48
  4. Step 4: Simplify right side
    766,868.40x = 447,429,320,907.85
  5. Step 5: Solve for x
    x = 447,429,320,907.85/766,868.40
  6. Step 6: Final answer
    x = 583,449.94

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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.