Home / 1,012,935.20-1,397,648.40-560,138.72

Finding the Fourth Proportional to 1,012,935.20, 1,397,648.40 and 560,138.72

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Solution

The fourth proportional to 1,012,935.20, 1,397,648.40 and 560,138.72 is: 772,879.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,012,935.20 : 1,397,648.40 = 560,138.72 : x
  2. Step 2: Convert to fraction form
    1,012,935.20/1,397,648.40 = 560,138.72/x
  3. Step 3: Cross multiply
    1,012,935.20x = 1,397,648.40 × 560,138.72
  4. Step 4: Simplify right side
    1,012,935.20x = 782,876,985,786.05
  5. Step 5: Solve for x
    x = 782,876,985,786.05/1,012,935.20
  6. Step 6: Final answer
    x = 772,879.63

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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.