Home / 815,262.88-1,222,972.08-316,665.76

Finding the Fourth Proportional to 815,262.88, 1,222,972.08 and 316,665.76

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Solution

The fourth proportional to 815,262.88, 1,222,972.08 and 316,665.76 is: 475,028.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,262.88 : 1,222,972.08 = 316,665.76 : x
  2. Step 2: Convert to fraction form
    815,262.88/1,222,972.08 = 316,665.76/x
  3. Step 3: Cross multiply
    815,262.88x = 1,222,972.08 × 316,665.76
  4. Step 4: Simplify right side
    815,262.88x = 387,273,383,171.98
  5. Step 5: Solve for x
    x = 387,273,383,171.98/815,262.88
  6. Step 6: Final answer
    x = 475,028.84

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1.5x scale

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.