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Finding the Fourth Proportional to 1,971,780.52, 2,720,395.38 and 1,608,576.52

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Solution

The fourth proportional to 1,971,780.52, 2,720,395.38 and 1,608,576.52 is: 2,219,295.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971,780.52 : 2,720,395.38 = 1,608,576.52 : x
  2. Step 2: Convert to fraction form
    1,971,780.52/2,720,395.38 = 1,608,576.52/x
  3. Step 3: Cross multiply
    1,971,780.52x = 2,720,395.38 × 1,608,576.52
  4. Step 4: Simplify right side
    1,971,780.52x = 4,375,964,133,384.48
  5. Step 5: Solve for x
    x = 4,375,964,133,384.48/1,971,780.52
  6. Step 6: Final answer
    x = 2,219,295.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.