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Finding the Fourth Proportional to 404,405.60, 606,608.40 and 123,886.40

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Solution

The fourth proportional to 404,405.60, 606,608.40 and 123,886.40 is: 185,829.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,405.60 : 606,608.40 = 123,886.40 : x
  2. Step 2: Convert to fraction form
    404,405.60/606,608.40 = 123,886.40/x
  3. Step 3: Cross multiply
    404,405.60x = 606,608.40 × 123,886.40
  4. Step 4: Simplify right side
    404,405.60x = 75,150,530,885.76
  5. Step 5: Solve for x
    x = 75,150,530,885.76/404,405.60
  6. Step 6: Final answer
    x = 185,829.60

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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.