Home / 726,507.20-1,089,801.80-221,084.68

Finding the Fourth Proportional to 726,507.20, 1,089,801.80 and 221,084.68

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Solution

The fourth proportional to 726,507.20, 1,089,801.80 and 221,084.68 is: 331,639.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,507.20 : 1,089,801.80 = 221,084.68 : x
  2. Step 2: Convert to fraction form
    726,507.20/1,089,801.80 = 221,084.68/x
  3. Step 3: Cross multiply
    726,507.20x = 1,089,801.80 × 221,084.68
  4. Step 4: Simplify right side
    726,507.20x = 240,938,482,216.42
  5. Step 5: Solve for x
    x = 240,938,482,216.42/726,507.20
  6. Step 6: Final answer
    x = 331,639.50

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Double scale
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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.