Home / 859,984.80-1,289,977.20-806,840.70

Finding the Fourth Proportional to 859,984.80, 1,289,977.20 and 806,840.70

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Solution

The fourth proportional to 859,984.80, 1,289,977.20 and 806,840.70 is: 1,210,261.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,984.80 : 1,289,977.20 = 806,840.70 : x
  2. Step 2: Convert to fraction form
    859,984.80/1,289,977.20 = 806,840.70/x
  3. Step 3: Cross multiply
    859,984.80x = 1,289,977.20 × 806,840.70
  4. Step 4: Simplify right side
    859,984.80x = 1,040,806,107,032.04
  5. Step 5: Solve for x
    x = 1,040,806,107,032.04/859,984.80
  6. Step 6: Final answer
    x = 1,210,261.05

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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.