Home / 2,172,016.80-3,258,025.20-990,064.80

Finding the Fourth Proportional to 2,172,016.80, 3,258,025.20 and 990,064.80

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Solution

The fourth proportional to 2,172,016.80, 3,258,025.20 and 990,064.80 is: 1,485,097.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172,016.80 : 3,258,025.20 = 990,064.80 : x
  2. Step 2: Convert to fraction form
    2,172,016.80/3,258,025.20 = 990,064.80/x
  3. Step 3: Cross multiply
    2,172,016.80x = 3,258,025.20 × 990,064.80
  4. Step 4: Simplify right side
    2,172,016.80x = 3,225,656,068,032.96
  5. Step 5: Solve for x
    x = 3,225,656,068,032.96/2,172,016.80
  6. Step 6: Final answer
    x = 1,485,097.20

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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.