Home / 1,878,813.81-2,821,535.22-1,399,171.89

Finding the Fourth Proportional to 1,878,813.81, 2,821,535.22 and 1,399,171.89

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Solution

The fourth proportional to 1,878,813.81, 2,821,535.22 and 1,399,171.89 is: 2,101,226.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878,813.81 : 2,821,535.22 = 1,399,171.89 : x
  2. Step 2: Convert to fraction form
    1,878,813.81/2,821,535.22 = 1,399,171.89/x
  3. Step 3: Cross multiply
    1,878,813.81x = 2,821,535.22 × 1,399,171.89
  4. Step 4: Simplify right side
    1,878,813.81x = 3,947,812,766,468.97
  5. Step 5: Solve for x
    x = 3,947,812,766,468.97/1,878,813.81
  6. Step 6: Final answer
    x = 2,101,226.18

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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.