Home / 674,928.35-931,635.68-388,562.57

Finding the Fourth Proportional to 674,928.35, 931,635.68 and 388,562.57

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Solution

The fourth proportional to 674,928.35, 931,635.68 and 388,562.57 is: 536,351.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,928.35 : 931,635.68 = 388,562.57 : x
  2. Step 2: Convert to fraction form
    674,928.35/931,635.68 = 388,562.57/x
  3. Step 3: Cross multiply
    674,928.35x = 931,635.68 × 388,562.57
  4. Step 4: Simplify right side
    674,928.35x = 361,998,747,523.51
  5. Step 5: Solve for x
    x = 361,998,747,523.51/674,928.35
  6. Step 6: Final answer
    x = 536,351.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.