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Finding the Fourth Proportional to 768,879.36, 1,061,049.28 and 424,738.96

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Solution

The fourth proportional to 768,879.36, 1,061,049.28 and 424,738.96 is: 586,137.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,879.36 : 1,061,049.28 = 424,738.96 : x
  2. Step 2: Convert to fraction form
    768,879.36/1,061,049.28 = 424,738.96/x
  3. Step 3: Cross multiply
    768,879.36x = 1,061,049.28 × 424,738.96
  4. Step 4: Simplify right side
    768,879.36x = 450,668,967,695.95
  5. Step 5: Solve for x
    x = 450,668,967,695.95/768,879.36
  6. Step 6: Final answer
    x = 586,137.42

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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.