Home / 2,100,612.80-3,150,919.20-680,812.40

Finding the Fourth Proportional to 2,100,612.80, 3,150,919.20 and 680,812.40

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Solution

The fourth proportional to 2,100,612.80, 3,150,919.20 and 680,812.40 is: 1,021,218.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,100,612.80 : 3,150,919.20 = 680,812.40 : x
  2. Step 2: Convert to fraction form
    2,100,612.80/3,150,919.20 = 680,812.40/x
  3. Step 3: Cross multiply
    2,100,612.80x = 3,150,919.20 × 680,812.40
  4. Step 4: Simplify right side
    2,100,612.80x = 2,145,184,862,758.08
  5. Step 5: Solve for x
    x = 2,145,184,862,758.08/2,100,612.80
  6. Step 6: Final answer
    x = 1,021,218.60

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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.