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Finding the Fourth Proportional to 325,627.60, 488,441.40 and 289,992.40

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Solution

The fourth proportional to 325,627.60, 488,441.40 and 289,992.40 is: 434,988.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,627.60 : 488,441.40 = 289,992.40 : x
  2. Step 2: Convert to fraction form
    325,627.60/488,441.40 = 289,992.40/x
  3. Step 3: Cross multiply
    325,627.60x = 488,441.40 × 289,992.40
  4. Step 4: Simplify right side
    325,627.60x = 141,644,293,845.36
  5. Step 5: Solve for x
    x = 141,644,293,845.36/325,627.60
  6. Step 6: Final answer
    x = 434,988.60

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Similar ratio
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1.5x scale

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.