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Finding the Fourth Proportional to 678,092.74, 935,771.61 and 376,286.74

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Solution

The fourth proportional to 678,092.74, 935,771.61 and 376,286.74 is: 519,277.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,092.74 : 935,771.61 = 376,286.74 : x
  2. Step 2: Convert to fraction form
    678,092.74/935,771.61 = 376,286.74/x
  3. Step 3: Cross multiply
    678,092.74x = 935,771.61 × 376,286.74
  4. Step 4: Simplify right side
    678,092.74x = 352,118,448,511.45
  5. Step 5: Solve for x
    x = 352,118,448,511.45/678,092.74
  6. Step 6: Final answer
    x = 519,277.71

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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.