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Finding the Fourth Proportional to 777,611.15, 1,166,416.73 and 216,645.65

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Solution

The fourth proportional to 777,611.15, 1,166,416.73 and 216,645.65 is: 324,968.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,611.15 : 1,166,416.73 = 216,645.65 : x
  2. Step 2: Convert to fraction form
    777,611.15/1,166,416.73 = 216,645.65/x
  3. Step 3: Cross multiply
    777,611.15x = 1,166,416.73 × 216,645.65
  4. Step 4: Simplify right side
    777,611.15x = 252,699,109,558.50
  5. Step 5: Solve for x
    x = 252,699,109,558.50/777,611.15
  6. Step 6: Final answer
    x = 324,968.48

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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.