Home / 690,799.72-946,399.11-664,912.56

Finding the Fourth Proportional to 690,799.72, 946,399.11 and 664,912.56

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Solution

The fourth proportional to 690,799.72, 946,399.11 and 664,912.56 is: 910,933.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,799.72 : 946,399.11 = 664,912.56 : x
  2. Step 2: Convert to fraction form
    690,799.72/946,399.11 = 664,912.56/x
  3. Step 3: Cross multiply
    690,799.72x = 946,399.11 × 664,912.56
  4. Step 4: Simplify right side
    690,799.72x = 629,272,655,011.82
  5. Step 5: Solve for x
    x = 629,272,655,011.82/690,799.72
  6. Step 6: Final answer
    x = 910,933.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.