Home / 1,328,479.80-1,992,914.10-697,441.20

Finding the Fourth Proportional to 1,328,479.80, 1,992,914.10 and 697,441.20

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Solution

The fourth proportional to 1,328,479.80, 1,992,914.10 and 697,441.20 is: 1,046,263.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,479.80 : 1,992,914.10 = 697,441.20 : x
  2. Step 2: Convert to fraction form
    1,328,479.80/1,992,914.10 = 697,441.20/x
  3. Step 3: Cross multiply
    1,328,479.80x = 1,992,914.10 × 697,441.20
  4. Step 4: Simplify right side
    1,328,479.80x = 1,389,940,401,400.92
  5. Step 5: Solve for x
    x = 1,389,940,401,400.92/1,328,479.80
  6. Step 6: Final answer
    x = 1,046,263.86

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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.