Home / 721,066.28-1,082,579.90-405,744.68

Finding the Fourth Proportional to 721,066.28, 1,082,579.90 and 405,744.68

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Solution

The fourth proportional to 721,066.28, 1,082,579.90 and 405,744.68 is: 609,168.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,066.28 : 1,082,579.90 = 405,744.68 : x
  2. Step 2: Convert to fraction form
    721,066.28/1,082,579.90 = 405,744.68/x
  3. Step 3: Cross multiply
    721,066.28x = 1,082,579.90 × 405,744.68
  4. Step 4: Simplify right side
    721,066.28x = 439,251,035,099.93
  5. Step 5: Solve for x
    x = 439,251,035,099.93/721,066.28
  6. Step 6: Final answer
    x = 609,168.74

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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.