Home / 727,905.80-1,091,858.70-664,920.20

Finding the Fourth Proportional to 727,905.80, 1,091,858.70 and 664,920.20

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Solution

The fourth proportional to 727,905.80, 1,091,858.70 and 664,920.20 is: 997,380.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,905.80 : 1,091,858.70 = 664,920.20 : x
  2. Step 2: Convert to fraction form
    727,905.80/1,091,858.70 = 664,920.20/x
  3. Step 3: Cross multiply
    727,905.80x = 1,091,858.70 × 664,920.20
  4. Step 4: Simplify right side
    727,905.80x = 725,998,905,175.74
  5. Step 5: Solve for x
    x = 725,998,905,175.74/727,905.80
  6. Step 6: Final answer
    x = 997,380.30

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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.