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Finding the Fourth Proportional to 3,889,810.80, 5,832,091.80 and 1,869,022.80

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Solution

The fourth proportional to 3,889,810.80, 5,832,091.80 and 1,869,022.80 is: 2,802,273.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889,810.80 : 5,832,091.80 = 1,869,022.80 : x
  2. Step 2: Convert to fraction form
    3,889,810.80/5,832,091.80 = 1,869,022.80/x
  3. Step 3: Cross multiply
    3,889,810.80x = 5,832,091.80 × 1,869,022.80
  4. Step 4: Simplify right side
    3,889,810.80x = 10,900,312,545,893.04
  5. Step 5: Solve for x
    x = 10,900,312,545,893.04/3,889,810.80
  6. Step 6: Final answer
    x = 2,802,273.20

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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.