Home / 726,503.09-1,089,795.63-221,080.55

Finding the Fourth Proportional to 726,503.09, 1,089,795.63 and 221,080.55

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Solution

The fourth proportional to 726,503.09, 1,089,795.63 and 221,080.55 is: 331,633.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,503.09 : 1,089,795.63 = 221,080.55 : x
  2. Step 2: Convert to fraction form
    726,503.09/1,089,795.63 = 221,080.55/x
  3. Step 3: Cross multiply
    726,503.09x = 1,089,795.63 × 221,080.55
  4. Step 4: Simplify right side
    726,503.09x = 240,932,611,819.02
  5. Step 5: Solve for x
    x = 240,932,611,819.02/726,503.09
  6. Step 6: Final answer
    x = 331,633.29

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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.