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Finding the Fourth Proportional to 688,805.51, 950,562.99 and 378,721.20

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Solution

The fourth proportional to 688,805.51, 950,562.99 and 378,721.20 is: 522,641.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,805.51 : 950,562.99 = 378,721.20 : x
  2. Step 2: Convert to fraction form
    688,805.51/950,562.99 = 378,721.20/x
  3. Step 3: Cross multiply
    688,805.51x = 950,562.99 × 378,721.20
  4. Step 4: Simplify right side
    688,805.51x = 359,998,358,747.85
  5. Step 5: Solve for x
    x = 359,998,358,747.85/688,805.51
  6. Step 6: Final answer
    x = 522,641.52

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