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Finding the Fourth Proportional to 440,572.68, 659,834.37 and 428,450.85

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Solution

The fourth proportional to 440,572.68, 659,834.37 and 428,450.85 is: 641,679.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,572.68 : 659,834.37 = 428,450.85 : x
  2. Step 2: Convert to fraction form
    440,572.68/659,834.37 = 428,450.85/x
  3. Step 3: Cross multiply
    440,572.68x = 659,834.37 × 428,450.85
  4. Step 4: Simplify right side
    440,572.68x = 282,706,596,685.72
  5. Step 5: Solve for x
    x = 282,706,596,685.72/440,572.68
  6. Step 6: Final answer
    x = 641,679.82

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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.