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Finding the Fourth Proportional to 678,072, 935,768.52 and 376,266

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Solution

The fourth proportional to 678,072, 935,768.52 and 376,266 is: 519,263.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,072 : 935,768.52 = 376,266 : x
  2. Step 2: Convert to fraction form
    678,072/935,768.52 = 376,266/x
  3. Step 3: Cross multiply
    678,072x = 935,768.52 × 376,266
  4. Step 4: Simplify right side
    678,072x = 352,097,877,946.32
  5. Step 5: Solve for x
    x = 352,097,877,946.32/678,072
  6. Step 6: Final answer
    x = 519,263.26

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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.