Home / 920,117.68-1,380,302.27-320,989.03

Finding the Fourth Proportional to 920,117.68, 1,380,302.27 and 320,989.03

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Solution

The fourth proportional to 920,117.68, 1,380,302.27 and 320,989.03 is: 481,527.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,117.68 : 1,380,302.27 = 320,989.03 : x
  2. Step 2: Convert to fraction form
    920,117.68/1,380,302.27 = 320,989.03/x
  3. Step 3: Cross multiply
    920,117.68x = 1,380,302.27 × 320,989.03
  4. Step 4: Simplify right side
    920,117.68x = 443,061,882,902.11
  5. Step 5: Solve for x
    x = 443,061,882,902.11/920,117.68
  6. Step 6: Final answer
    x = 481,527.41

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1.5x scale

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.