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Finding the Fourth Proportional to 678,073, 935,769.90 and 376,267

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Solution

The fourth proportional to 678,073, 935,769.90 and 376,267 is: 519,264.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,073 : 935,769.90 = 376,267 : x
  2. Step 2: Convert to fraction form
    678,073/935,769.90 = 376,267/x
  3. Step 3: Cross multiply
    678,073x = 935,769.90 × 376,267
  4. Step 4: Simplify right side
    678,073x = 352,099,332,963.30
  5. Step 5: Solve for x
    x = 352,099,332,963.30/678,073
  6. Step 6: Final answer
    x = 519,264.64

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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.