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Finding the Fourth Proportional to 998,868, 1,378,416.88 and 546,159

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Solution

The fourth proportional to 998,868, 1,378,416.88 and 546,159 is: 753,687.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,868 : 1,378,416.88 = 546,159 : x
  2. Step 2: Convert to fraction form
    998,868/1,378,416.88 = 546,159/x
  3. Step 3: Cross multiply
    998,868x = 1,378,416.88 × 546,159
  4. Step 4: Simplify right side
    998,868x = 752,834,784,763.92
  5. Step 5: Solve for x
    x = 752,834,784,763.92/998,868
  6. Step 6: Final answer
    x = 753,687.96

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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.