Home / 2,660,406.12-3,991,199.70-766,999.80

Finding the Fourth Proportional to 2,660,406.12, 3,991,199.70 and 766,999.80

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Solution

The fourth proportional to 2,660,406.12, 3,991,199.70 and 766,999.80 is: 1,150,669.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660,406.12 : 3,991,199.70 = 766,999.80 : x
  2. Step 2: Convert to fraction form
    2,660,406.12/3,991,199.70 = 766,999.80/x
  3. Step 3: Cross multiply
    2,660,406.12x = 3,991,199.70 × 766,999.80
  4. Step 4: Simplify right side
    2,660,406.12x = 3,061,249,371,660.06
  5. Step 5: Solve for x
    x = 3,061,249,371,660.06/2,660,406.12
  6. Step 6: Final answer
    x = 1,150,669.95

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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.