Home / 999,990.45-1,498,786.49-513,171.93

Finding the Fourth Proportional to 999,990.45, 1,498,786.49 and 513,171.93

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Solution

The fourth proportional to 999,990.45, 1,498,786.49 and 513,171.93 is: 769,142.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,990.45 : 1,498,786.49 = 513,171.93 : x
  2. Step 2: Convert to fraction form
    999,990.45/1,498,786.49 = 513,171.93/x
  3. Step 3: Cross multiply
    999,990.45x = 1,498,786.49 × 513,171.93
  4. Step 4: Simplify right side
    999,990.45x = 769,135,155,532.68
  5. Step 5: Solve for x
    x = 769,135,155,532.68/999,990.45
  6. Step 6: Final answer
    x = 769,142.50

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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.