Home / 678,018.25-935,665.19-376,260.81

Finding the Fourth Proportional to 678,018.25, 935,665.19 and 376,260.81

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Solution

The fourth proportional to 678,018.25, 935,665.19 and 376,260.81 is: 519,239.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,018.25 : 935,665.19 = 376,260.81 : x
  2. Step 2: Convert to fraction form
    678,018.25/935,665.19 = 376,260.81/x
  3. Step 3: Cross multiply
    678,018.25x = 935,665.19 × 376,260.81
  4. Step 4: Simplify right side
    678,018.25x = 352,054,140,396.90
  5. Step 5: Solve for x
    x = 352,054,140,396.90/678,018.25
  6. Step 6: Final answer
    x = 519,239.92

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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.