Home / 727,489.04-1,003,936.94-421,624.80

Finding the Fourth Proportional to 727,489.04, 1,003,936.94 and 421,624.80

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Solution

The fourth proportional to 727,489.04, 1,003,936.94 and 421,624.80 is: 581,843.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,489.04 : 1,003,936.94 = 421,624.80 : x
  2. Step 2: Convert to fraction form
    727,489.04/1,003,936.94 = 421,624.80/x
  3. Step 3: Cross multiply
    727,489.04x = 1,003,936.94 × 421,624.80
  4. Step 4: Simplify right side
    727,489.04x = 423,284,711,540.11
  5. Step 5: Solve for x
    x = 423,284,711,540.11/727,489.04
  6. Step 6: Final answer
    x = 581,843.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.