Home / 812,564.16-1,121,341.68-449,980.08

Finding the Fourth Proportional to 812,564.16, 1,121,341.68 and 449,980.08

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Solution

The fourth proportional to 812,564.16, 1,121,341.68 and 449,980.08 is: 620,974.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,564.16 : 1,121,341.68 = 449,980.08 : x
  2. Step 2: Convert to fraction form
    812,564.16/1,121,341.68 = 449,980.08/x
  3. Step 3: Cross multiply
    812,564.16x = 1,121,341.68 × 449,980.08
  4. Step 4: Simplify right side
    812,564.16x = 504,581,418,873.73
  5. Step 5: Solve for x
    x = 504,581,418,873.73/812,564.16
  6. Step 6: Final answer
    x = 620,974.25

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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.