Home / 721,820.64-1,082,880.38-216,361.20

Finding the Fourth Proportional to 721,820.64, 1,082,880.38 and 216,361.20

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Solution

The fourth proportional to 721,820.64, 1,082,880.38 and 216,361.20 is: 324,586.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,820.64 : 1,082,880.38 = 216,361.20 : x
  2. Step 2: Convert to fraction form
    721,820.64/1,082,880.38 = 216,361.20/x
  3. Step 3: Cross multiply
    721,820.64x = 1,082,880.38 × 216,361.20
  4. Step 4: Simplify right side
    721,820.64x = 234,293,298,473.26
  5. Step 5: Solve for x
    x = 234,293,298,473.26/721,820.64
  6. Step 6: Final answer
    x = 324,586.59

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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.