Home / 670,120.21-1,005,304.83-220,872.61

Finding the Fourth Proportional to 670,120.21, 1,005,304.83 and 220,872.61

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Solution

The fourth proportional to 670,120.21, 1,005,304.83 and 220,872.61 is: 331,349.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,120.21 : 1,005,304.83 = 220,872.61 : x
  2. Step 2: Convert to fraction form
    670,120.21/1,005,304.83 = 220,872.61/x
  3. Step 3: Cross multiply
    670,120.21x = 1,005,304.83 × 220,872.61
  4. Step 4: Simplify right side
    670,120.21x = 222,044,301,647.71
  5. Step 5: Solve for x
    x = 222,044,301,647.71/670,120.21
  6. Step 6: Final answer
    x = 331,349.96

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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.