Home / 715,797.24-987,819.06-393,515.46

Finding the Fourth Proportional to 715,797.24, 987,819.06 and 393,515.46

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Solution

The fourth proportional to 715,797.24, 987,819.06 and 393,515.46 is: 543,061.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,797.24 : 987,819.06 = 393,515.46 : x
  2. Step 2: Convert to fraction form
    715,797.24/987,819.06 = 393,515.46/x
  3. Step 3: Cross multiply
    715,797.24x = 987,819.06 × 393,515.46
  4. Step 4: Simplify right side
    715,797.24x = 388,722,071,792.67
  5. Step 5: Solve for x
    x = 388,722,071,792.67/715,797.24
  6. Step 6: Final answer
    x = 543,061.71

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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.