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Finding the Fourth Proportional to 682,603.11, 941,991.54 and 376,679.40

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Solution

The fourth proportional to 682,603.11, 941,991.54 and 376,679.40 is: 519,817.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,603.11 : 941,991.54 = 376,679.40 : x
  2. Step 2: Convert to fraction form
    682,603.11/941,991.54 = 376,679.40/x
  3. Step 3: Cross multiply
    682,603.11x = 941,991.54 × 376,679.40
  4. Step 4: Simplify right side
    682,603.11x = 354,828,808,092.28
  5. Step 5: Solve for x
    x = 354,828,808,092.28/682,603.11
  6. Step 6: Final answer
    x = 519,817.16

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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.