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Finding the Fourth Proportional to 289,327.60, 405,611.60 and 289,327.60

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Solution

The fourth proportional to 289,327.60, 405,611.60 and 289,327.60 is: 405,611.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,327.60 : 405,611.60 = 289,327.60 : x
  2. Step 2: Convert to fraction form
    289,327.60/405,611.60 = 289,327.60/x
  3. Step 3: Cross multiply
    289,327.60x = 405,611.60 × 289,327.60
  4. Step 4: Simplify right side
    289,327.60x = 117,354,630,760.16
  5. Step 5: Solve for x
    x = 117,354,630,760.16/289,327.60
  6. Step 6: Final answer
    x = 405,611.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.