Home / 768,408.96-1,060,306.56-428,891.52

Finding the Fourth Proportional to 768,408.96, 1,060,306.56 and 428,891.52

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Solution

The fourth proportional to 768,408.96, 1,060,306.56 and 428,891.52 is: 591,815.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,408.96 : 1,060,306.56 = 428,891.52 : x
  2. Step 2: Convert to fraction form
    768,408.96/1,060,306.56 = 428,891.52/x
  3. Step 3: Cross multiply
    768,408.96x = 1,060,306.56 × 428,891.52
  4. Step 4: Simplify right side
    768,408.96x = 454,756,492,184.37
  5. Step 5: Solve for x
    x = 454,756,492,184.37/768,408.96
  6. Step 6: Final answer
    x = 591,815.71

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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.