Home / 819,838.20-1,229,930.10-346,279.80

Finding the Fourth Proportional to 819,838.20, 1,229,930.10 and 346,279.80

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Solution

The fourth proportional to 819,838.20, 1,229,930.10 and 346,279.80 is: 519,492.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,838.20 : 1,229,930.10 = 346,279.80 : x
  2. Step 2: Convert to fraction form
    819,838.20/1,229,930.10 = 346,279.80/x
  3. Step 3: Cross multiply
    819,838.20x = 1,229,930.10 × 346,279.80
  4. Step 4: Simplify right side
    819,838.20x = 425,899,949,041.98
  5. Step 5: Solve for x
    x = 425,899,949,041.98/819,838.20
  6. Step 6: Final answer
    x = 519,492.69

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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.