Home / 878,680.48-1,317,548.40-279,479.20

Finding the Fourth Proportional to 878,680.48, 1,317,548.40 and 279,479.20

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Solution

The fourth proportional to 878,680.48, 1,317,548.40 and 279,479.20 is: 419,068.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,680.48 : 1,317,548.40 = 279,479.20 : x
  2. Step 2: Convert to fraction form
    878,680.48/1,317,548.40 = 279,479.20/x
  3. Step 3: Cross multiply
    878,680.48x = 1,317,548.40 × 279,479.20
  4. Step 4: Simplify right side
    878,680.48x = 368,227,372,793.28
  5. Step 5: Solve for x
    x = 368,227,372,793.28/878,680.48
  6. Step 6: Final answer
    x = 419,068.57

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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.