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Finding the Fourth Proportional to 998,650, 1,378,141.86 and 545,941

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Solution

The fourth proportional to 998,650, 1,378,141.86 and 545,941 is: 753,401.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,650 : 1,378,141.86 = 545,941 : x
  2. Step 2: Convert to fraction form
    998,650/1,378,141.86 = 545,941/x
  3. Step 3: Cross multiply
    998,650x = 1,378,141.86 × 545,941
  4. Step 4: Simplify right side
    998,650x = 752,384,145,190.26
  5. Step 5: Solve for x
    x = 752,384,145,190.26/998,650
  6. Step 6: Final answer
    x = 753,401.24

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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.