Home / 821,447.60-1,231,249.80-348,052.40

Finding the Fourth Proportional to 821,447.60, 1,231,249.80 and 348,052.40

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Solution

The fourth proportional to 821,447.60, 1,231,249.80 and 348,052.40 is: 521,688.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,447.60 : 1,231,249.80 = 348,052.40 : x
  2. Step 2: Convert to fraction form
    821,447.60/1,231,249.80 = 348,052.40/x
  3. Step 3: Cross multiply
    821,447.60x = 1,231,249.80 × 348,052.40
  4. Step 4: Simplify right side
    821,447.60x = 428,539,447,889.52
  5. Step 5: Solve for x
    x = 428,539,447,889.52/821,447.60
  6. Step 6: Final answer
    x = 521,688.11

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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.