Home / 878,418.20-1,317,613.50-279,370.76

Finding the Fourth Proportional to 878,418.20, 1,317,613.50 and 279,370.76

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Solution

The fourth proportional to 878,418.20, 1,317,613.50 and 279,370.76 is: 419,051.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,418.20 : 1,317,613.50 = 279,370.76 : x
  2. Step 2: Convert to fraction form
    878,418.20/1,317,613.50 = 279,370.76/x
  3. Step 3: Cross multiply
    878,418.20x = 1,317,613.50 × 279,370.76
  4. Step 4: Simplify right side
    878,418.20x = 368,102,684,881.26
  5. Step 5: Solve for x
    x = 368,102,684,881.26/878,418.20
  6. Step 6: Final answer
    x = 419,051.75

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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.