Home / 2,185,615.80-3,278,423.70-1,989,660.60

Finding the Fourth Proportional to 2,185,615.80, 3,278,423.70 and 1,989,660.60

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Solution

The fourth proportional to 2,185,615.80, 3,278,423.70 and 1,989,660.60 is: 2,984,490.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185,615.80 : 3,278,423.70 = 1,989,660.60 : x
  2. Step 2: Convert to fraction form
    2,185,615.80/3,278,423.70 = 1,989,660.60/x
  3. Step 3: Cross multiply
    2,185,615.80x = 3,278,423.70 × 1,989,660.60
  4. Step 4: Simplify right side
    2,185,615.80x = 6,522,950,465,996.22
  5. Step 5: Solve for x
    x = 6,522,950,465,996.22/2,185,615.80
  6. Step 6: Final answer
    x = 2,984,490.90

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Similar ratio
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1.5x scale

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.