Home / 998,971.20-1,498,456.80-438,005.70

Finding the Fourth Proportional to 998,971.20, 1,498,456.80 and 438,005.70

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Solution

The fourth proportional to 998,971.20, 1,498,456.80 and 438,005.70 is: 657,008.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,971.20 : 1,498,456.80 = 438,005.70 : x
  2. Step 2: Convert to fraction form
    998,971.20/1,498,456.80 = 438,005.70/x
  3. Step 3: Cross multiply
    998,971.20x = 1,498,456.80 × 438,005.70
  4. Step 4: Simplify right side
    998,971.20x = 656,332,619,603.76
  5. Step 5: Solve for x
    x = 656,332,619,603.76/998,971.20
  6. Step 6: Final answer
    x = 657,008.55

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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.