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Finding the Fourth Proportional to 678,016.50, 935,662.77 and 376,259.06

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Solution

The fourth proportional to 678,016.50, 935,662.77 and 376,259.06 is: 519,237.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,016.50 : 935,662.77 = 376,259.06 : x
  2. Step 2: Convert to fraction form
    678,016.50/935,662.77 = 376,259.06/x
  3. Step 3: Cross multiply
    678,016.50x = 935,662.77 × 376,259.06
  4. Step 4: Simplify right side
    678,016.50x = 352,051,594,317.20
  5. Step 5: Solve for x
    x = 352,051,594,317.20/678,016.50
  6. Step 6: Final answer
    x = 519,237.50

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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.