Home / 2,188,280.80-3,280,088.40-839,922.40

Finding the Fourth Proportional to 2,188,280.80, 3,280,088.40 and 839,922.40

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Solution

The fourth proportional to 2,188,280.80, 3,280,088.40 and 839,922.40 is: 1,258,988.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188,280.80 : 3,280,088.40 = 839,922.40 : x
  2. Step 2: Convert to fraction form
    2,188,280.80/3,280,088.40 = 839,922.40/x
  3. Step 3: Cross multiply
    2,188,280.80x = 3,280,088.40 × 839,922.40
  4. Step 4: Simplify right side
    2,188,280.80x = 2,755,019,721,140.16
  5. Step 5: Solve for x
    x = 2,755,019,721,140.16/2,188,280.80
  6. Step 6: Final answer
    x = 1,258,988.21

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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.