Home / 2,188,287.80-3,280,098.90-839,929.40

Finding the Fourth Proportional to 2,188,287.80, 3,280,098.90 and 839,929.40

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Solution

The fourth proportional to 2,188,287.80, 3,280,098.90 and 839,929.40 is: 1,258,998.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188,287.80 : 3,280,098.90 = 839,929.40 : x
  2. Step 2: Convert to fraction form
    2,188,287.80/3,280,098.90 = 839,929.40/x
  3. Step 3: Cross multiply
    2,188,287.80x = 3,280,098.90 × 839,929.40
  4. Step 4: Simplify right side
    2,188,287.80x = 2,755,051,501,017.66
  5. Step 5: Solve for x
    x = 2,755,051,501,017.66/2,188,287.80
  6. Step 6: Final answer
    x = 1,258,998.70

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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.