Home / 727,431.80-1,091,147.70-664,446.20

Finding the Fourth Proportional to 727,431.80, 1,091,147.70 and 664,446.20

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Solution

The fourth proportional to 727,431.80, 1,091,147.70 and 664,446.20 is: 996,669.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,431.80 : 1,091,147.70 = 664,446.20 : x
  2. Step 2: Convert to fraction form
    727,431.80/1,091,147.70 = 664,446.20/x
  3. Step 3: Cross multiply
    727,431.80x = 1,091,147.70 × 664,446.20
  4. Step 4: Simplify right side
    727,431.80x = 725,008,942,903.74
  5. Step 5: Solve for x
    x = 725,008,942,903.74/727,431.80
  6. Step 6: Final answer
    x = 996,669.30

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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.