Home / 814,921.48-1,222,632.48-389,000.80

Finding the Fourth Proportional to 814,921.48, 1,222,632.48 and 389,000.80

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Solution

The fourth proportional to 814,921.48, 1,222,632.48 and 389,000.80 is: 583,620.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,921.48 : 1,222,632.48 = 389,000.80 : x
  2. Step 2: Convert to fraction form
    814,921.48/1,222,632.48 = 389,000.80/x
  3. Step 3: Cross multiply
    814,921.48x = 1,222,632.48 × 389,000.80
  4. Step 4: Simplify right side
    814,921.48x = 475,605,012,825.98
  5. Step 5: Solve for x
    x = 475,605,012,825.98/814,921.48
  6. Step 6: Final answer
    x = 583,620.66

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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.