Home / 878,470.20-1,317,705.30-213,622.20

Finding the Fourth Proportional to 878,470.20, 1,317,705.30 and 213,622.20

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Solution

The fourth proportional to 878,470.20, 1,317,705.30 and 213,622.20 is: 320,433.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,470.20 : 1,317,705.30 = 213,622.20 : x
  2. Step 2: Convert to fraction form
    878,470.20/1,317,705.30 = 213,622.20/x
  3. Step 3: Cross multiply
    878,470.20x = 1,317,705.30 × 213,622.20
  4. Step 4: Simplify right side
    878,470.20x = 281,491,105,137.66
  5. Step 5: Solve for x
    x = 281,491,105,137.66/878,470.20
  6. Step 6: Final answer
    x = 320,433.30

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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.