Home / 1,336,693.20-2,005,331.40-389,986.80

Finding the Fourth Proportional to 1,336,693.20, 2,005,331.40 and 389,986.80

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Solution

The fourth proportional to 1,336,693.20, 2,005,331.40 and 389,986.80 is: 585,065.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336,693.20 : 2,005,331.40 = 389,986.80 : x
  2. Step 2: Convert to fraction form
    1,336,693.20/2,005,331.40 = 389,986.80/x
  3. Step 3: Cross multiply
    1,336,693.20x = 2,005,331.40 × 389,986.80
  4. Step 4: Simplify right side
    1,336,693.20x = 782,052,775,625.52
  5. Step 5: Solve for x
    x = 782,052,775,625.52/1,336,693.20
  6. Step 6: Final answer
    x = 585,065.28

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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.