Home / 812,482.13-1,121,211.54-449,898.20

Finding the Fourth Proportional to 812,482.13, 1,121,211.54 and 449,898.20

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Solution

The fourth proportional to 812,482.13, 1,121,211.54 and 449,898.20 is: 620,851.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,482.13 : 1,121,211.54 = 449,898.20 : x
  2. Step 2: Convert to fraction form
    812,482.13/1,121,211.54 = 449,898.20/x
  3. Step 3: Cross multiply
    812,482.13x = 1,121,211.54 × 449,898.20
  4. Step 4: Simplify right side
    812,482.13x = 504,431,053,665.23
  5. Step 5: Solve for x
    x = 504,431,053,665.23/812,482.13
  6. Step 6: Final answer
    x = 620,851.87

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1.5x scale

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.