Home / 814,876.80-1,222,315.20-499,511.40

Finding the Fourth Proportional to 814,876.80, 1,222,315.20 and 499,511.40

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Solution

The fourth proportional to 814,876.80, 1,222,315.20 and 499,511.40 is: 749,267.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,876.80 : 1,222,315.20 = 499,511.40 : x
  2. Step 2: Convert to fraction form
    814,876.80/1,222,315.20 = 499,511.40/x
  3. Step 3: Cross multiply
    814,876.80x = 1,222,315.20 × 499,511.40
  4. Step 4: Simplify right side
    814,876.80x = 610,560,376,793.28
  5. Step 5: Solve for x
    x = 610,560,376,793.28/814,876.80
  6. Step 6: Final answer
    x = 749,267.10

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1.5x scale

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.