Home / 851,280.80-1,276,921.20-809,808.80

Finding the Fourth Proportional to 851,280.80, 1,276,921.20 and 809,808.80

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Solution

The fourth proportional to 851,280.80, 1,276,921.20 and 809,808.80 is: 1,214,713.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,280.80 : 1,276,921.20 = 809,808.80 : x
  2. Step 2: Convert to fraction form
    851,280.80/1,276,921.20 = 809,808.80/x
  3. Step 3: Cross multiply
    851,280.80x = 1,276,921.20 × 809,808.80
  4. Step 4: Simplify right side
    851,280.80x = 1,034,062,024,666.56
  5. Step 5: Solve for x
    x = 1,034,062,024,666.56/851,280.80
  6. Step 6: Final answer
    x = 1,214,713.20

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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.