Home / 820,216.20-1,229,886.90-346,366.20

Finding the Fourth Proportional to 820,216.20, 1,229,886.90 and 346,366.20

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Solution

The fourth proportional to 820,216.20, 1,229,886.90 and 346,366.20 is: 519,364.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,216.20 : 1,229,886.90 = 346,366.20 : x
  2. Step 2: Convert to fraction form
    820,216.20/1,229,886.90 = 346,366.20/x
  3. Step 3: Cross multiply
    820,216.20x = 1,229,886.90 × 346,366.20
  4. Step 4: Simplify right side
    820,216.20x = 425,991,251,982.78
  5. Step 5: Solve for x
    x = 425,991,251,982.78/820,216.20
  6. Step 6: Final answer
    x = 519,364.59

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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.