Home / 1,328,809.80-1,991,025.90-766,864.20

Finding the Fourth Proportional to 1,328,809.80, 1,991,025.90 and 766,864.20

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Solution

The fourth proportional to 1,328,809.80, 1,991,025.90 and 766,864.20 is: 1,149,033.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,809.80 : 1,991,025.90 = 766,864.20 : x
  2. Step 2: Convert to fraction form
    1,328,809.80/1,991,025.90 = 766,864.20/x
  3. Step 3: Cross multiply
    1,328,809.80x = 1,991,025.90 × 766,864.20
  4. Step 4: Simplify right side
    1,328,809.80x = 1,526,846,483,982.78
  5. Step 5: Solve for x
    x = 1,526,846,483,982.78/1,328,809.80
  6. Step 6: Final answer
    x = 1,149,033.13

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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.