Home / 670,554.18-1,005,863.40-221,315.22

Finding the Fourth Proportional to 670,554.18, 1,005,863.40 and 221,315.22

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Solution

The fourth proportional to 670,554.18, 1,005,863.40 and 221,315.22 is: 331,983.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,554.18 : 1,005,863.40 = 221,315.22 : x
  2. Step 2: Convert to fraction form
    670,554.18/1,005,863.40 = 221,315.22/x
  3. Step 3: Cross multiply
    670,554.18x = 1,005,863.40 × 221,315.22
  4. Step 4: Simplify right side
    670,554.18x = 222,612,879,660.95
  5. Step 5: Solve for x
    x = 222,612,879,660.95/670,554.18
  6. Step 6: Final answer
    x = 331,983.43

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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.