Home / 509,400.60-702,979.22-279,982.96

Finding the Fourth Proportional to 509,400.60, 702,979.22 and 279,982.96

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Solution

The fourth proportional to 509,400.60, 702,979.22 and 279,982.96 is: 386,380.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,400.60 : 702,979.22 = 279,982.96 : x
  2. Step 2: Convert to fraction form
    509,400.60/702,979.22 = 279,982.96/x
  3. Step 3: Cross multiply
    509,400.60x = 702,979.22 × 279,982.96
  4. Step 4: Simplify right side
    509,400.60x = 196,822,202,834.09
  5. Step 5: Solve for x
    x = 196,822,202,834.09/509,400.60
  6. Step 6: Final answer
    x = 386,380.00

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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.