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Finding the Fourth Proportional to 678,081.38, 935,796.04 and 376,275.38

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Solution

The fourth proportional to 678,081.38, 935,796.04 and 376,275.38 is: 519,284.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,081.38 : 935,796.04 = 376,275.38 : x
  2. Step 2: Convert to fraction form
    678,081.38/935,796.04 = 376,275.38/x
  3. Step 3: Cross multiply
    678,081.38x = 935,796.04 × 376,275.38
  4. Step 4: Simplify right side
    678,081.38x = 352,117,004,933.83
  5. Step 5: Solve for x
    x = 352,117,004,933.83/678,081.38
  6. Step 6: Final answer
    x = 519,284.29

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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.