Home / 1,319,479.20-1,979,218.80-787,600.80

Finding the Fourth Proportional to 1,319,479.20, 1,979,218.80 and 787,600.80

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Solution

The fourth proportional to 1,319,479.20, 1,979,218.80 and 787,600.80 is: 1,181,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,479.20 : 1,979,218.80 = 787,600.80 : x
  2. Step 2: Convert to fraction form
    1,319,479.20/1,979,218.80 = 787,600.80/x
  3. Step 3: Cross multiply
    1,319,479.20x = 1,979,218.80 × 787,600.80
  4. Step 4: Simplify right side
    1,319,479.20x = 1,558,834,310,255.04
  5. Step 5: Solve for x
    x = 1,558,834,310,255.04/1,319,479.20
  6. Step 6: Final answer
    x = 1,181,401.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.