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Finding the Fourth Proportional to 678,508.68, 936,305.44 and 376,683.24

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Solution

The fourth proportional to 678,508.68, 936,305.44 and 376,683.24 is: 519,802.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,508.68 : 936,305.44 = 376,683.24 : x
  2. Step 2: Convert to fraction form
    678,508.68/936,305.44 = 376,683.24/x
  3. Step 3: Cross multiply
    678,508.68x = 936,305.44 × 376,683.24
  4. Step 4: Simplify right side
    678,508.68x = 352,690,566,768.83
  5. Step 5: Solve for x
    x = 352,690,566,768.83/678,508.68
  6. Step 6: Final answer
    x = 519,802.59

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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.