Home / 815,438.63-1,222,673.38-310,036.61

Finding the Fourth Proportional to 815,438.63, 1,222,673.38 and 310,036.61

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Solution

The fourth proportional to 815,438.63, 1,222,673.38 and 310,036.61 is: 464,870.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,438.63 : 1,222,673.38 = 310,036.61 : x
  2. Step 2: Convert to fraction form
    815,438.63/1,222,673.38 = 310,036.61/x
  3. Step 3: Cross multiply
    815,438.63x = 1,222,673.38 × 310,036.61
  4. Step 4: Simplify right side
    815,438.63x = 379,073,509,872.44
  5. Step 5: Solve for x
    x = 379,073,509,872.44/815,438.63
  6. Step 6: Final answer
    x = 464,870.68

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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.