Home / 1,221,078.86-1,831,897.33-422,359.73

Finding the Fourth Proportional to 1,221,078.86, 1,831,897.33 and 422,359.73

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Solution

The fourth proportional to 1,221,078.86, 1,831,897.33 and 422,359.73 is: 633,636.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,078.86 : 1,831,897.33 = 422,359.73 : x
  2. Step 2: Convert to fraction form
    1,221,078.86/1,831,897.33 = 422,359.73/x
  3. Step 3: Cross multiply
    1,221,078.86x = 1,831,897.33 × 422,359.73
  4. Step 4: Simplify right side
    1,221,078.86x = 773,719,651,471.14
  5. Step 5: Solve for x
    x = 773,719,651,471.14/1,221,078.86
  6. Step 6: Final answer
    x = 633,636.11

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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.