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Finding the Fourth Proportional to 678,716.15, 936,635.99 and 372,799.71

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Solution

The fourth proportional to 678,716.15, 936,635.99 and 372,799.71 is: 514,467.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,716.15 : 936,635.99 = 372,799.71 : x
  2. Step 2: Convert to fraction form
    678,716.15/936,635.99 = 372,799.71/x
  3. Step 3: Cross multiply
    678,716.15x = 936,635.99 × 372,799.71
  4. Step 4: Simplify right side
    678,716.15x = 349,177,623,583.56
  5. Step 5: Solve for x
    x = 349,177,623,583.56/678,716.15
  6. Step 6: Final answer
    x = 514,467.83

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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.