Home / 821,940.60-1,231,989.30-348,545.40

Finding the Fourth Proportional to 821,940.60, 1,231,989.30 and 348,545.40

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Solution

The fourth proportional to 821,940.60, 1,231,989.30 and 348,545.40 is: 522,427.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,940.60 : 1,231,989.30 = 348,545.40 : x
  2. Step 2: Convert to fraction form
    821,940.60/1,231,989.30 = 348,545.40/x
  3. Step 3: Cross multiply
    821,940.60x = 1,231,989.30 × 348,545.40
  4. Step 4: Simplify right side
    821,940.60x = 429,404,203,364.22
  5. Step 5: Solve for x
    x = 429,404,203,364.22/821,940.60
  6. Step 6: Final answer
    x = 522,427.29

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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.