Home / 1,349,221.78-2,023,231.30-389,449.20

Finding the Fourth Proportional to 1,349,221.78, 2,023,231.30 and 389,449.20

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Solution

The fourth proportional to 1,349,221.78, 2,023,231.30 and 389,449.20 is: 584,000.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,349,221.78 : 2,023,231.30 = 389,449.20 : x
  2. Step 2: Convert to fraction form
    1,349,221.78/2,023,231.30 = 389,449.20/x
  3. Step 3: Cross multiply
    1,349,221.78x = 2,023,231.30 × 389,449.20
  4. Step 4: Simplify right side
    1,349,221.78x = 787,945,810,226.34
  5. Step 5: Solve for x
    x = 787,945,810,226.34/1,349,221.78
  6. Step 6: Final answer
    x = 584,000.22

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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.