Home / 3,189,689.80-4,784,534.70-2,181,920.20

Finding the Fourth Proportional to 3,189,689.80, 4,784,534.70 and 2,181,920.20

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Solution

The fourth proportional to 3,189,689.80, 4,784,534.70 and 2,181,920.20 is: 3,272,880.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189,689.80 : 4,784,534.70 = 2,181,920.20 : x
  2. Step 2: Convert to fraction form
    3,189,689.80/4,784,534.70 = 2,181,920.20/x
  3. Step 3: Cross multiply
    3,189,689.80x = 4,784,534.70 × 2,181,920.20
  4. Step 4: Simplify right side
    3,189,689.80x = 10,439,472,909,530.94
  5. Step 5: Solve for x
    x = 10,439,472,909,530.94/3,189,689.80
  6. Step 6: Final answer
    x = 3,272,880.30

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Double scale
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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.