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Finding the Fourth Proportional to 1,787,281.56, 2,682,832.32 and 723,019.32

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Solution

The fourth proportional to 1,787,281.56, 2,682,832.32 and 723,019.32 is: 1,085,301.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787,281.56 : 2,682,832.32 = 723,019.32 : x
  2. Step 2: Convert to fraction form
    1,787,281.56/2,682,832.32 = 723,019.32/x
  3. Step 3: Cross multiply
    1,787,281.56x = 2,682,832.32 × 723,019.32
  4. Step 4: Simplify right side
    1,787,281.56x = 1,939,739,599,680.42
  5. Step 5: Solve for x
    x = 1,939,739,599,680.42/1,787,281.56
  6. Step 6: Final answer
    x = 1,085,301.64

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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.