Home / 767,138.40-1,058,658.15-422,986.65

Finding the Fourth Proportional to 767,138.40, 1,058,658.15 and 422,986.65

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Solution

The fourth proportional to 767,138.40, 1,058,658.15 and 422,986.65 is: 583,725.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,138.40 : 1,058,658.15 = 422,986.65 : x
  2. Step 2: Convert to fraction form
    767,138.40/1,058,658.15 = 422,986.65/x
  3. Step 3: Cross multiply
    767,138.40x = 1,058,658.15 × 422,986.65
  4. Step 4: Simplify right side
    767,138.40x = 447,798,264,363.70
  5. Step 5: Solve for x
    x = 447,798,264,363.70/767,138.40
  6. Step 6: Final answer
    x = 583,725.52

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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.