Home / 998,138.04-1,498,272.62-429,800.54

Finding the Fourth Proportional to 998,138.04, 1,498,272.62 and 429,800.54

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Solution

The fourth proportional to 998,138.04, 1,498,272.62 and 429,800.54 is: 645,159.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,138.04 : 1,498,272.62 = 429,800.54 : x
  2. Step 2: Convert to fraction form
    998,138.04/1,498,272.62 = 429,800.54/x
  3. Step 3: Cross multiply
    998,138.04x = 1,498,272.62 × 429,800.54
  4. Step 4: Simplify right side
    998,138.04x = 643,958,371,502.85
  5. Step 5: Solve for x
    x = 643,958,371,502.85/998,138.04
  6. Step 6: Final answer
    x = 645,159.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.