Home / 821,451.60-1,231,255.80-348,056.40

Finding the Fourth Proportional to 821,451.60, 1,231,255.80 and 348,056.40

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Solution

The fourth proportional to 821,451.60, 1,231,255.80 and 348,056.40 is: 521,694.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,451.60 : 1,231,255.80 = 348,056.40 : x
  2. Step 2: Convert to fraction form
    821,451.60/1,231,255.80 = 348,056.40/x
  3. Step 3: Cross multiply
    821,451.60x = 1,231,255.80 × 348,056.40
  4. Step 4: Simplify right side
    821,451.60x = 428,546,461,227.12
  5. Step 5: Solve for x
    x = 428,546,461,227.12/821,451.60
  6. Step 6: Final answer
    x = 521,694.11

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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.