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Finding the Fourth Proportional to 2,868,657.02, 3,958,843.85 and 1,561,959.74

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Solution

The fourth proportional to 2,868,657.02, 3,958,843.85 and 1,561,959.74 is: 2,155,557.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,868,657.02 : 3,958,843.85 = 1,561,959.74 : x
  2. Step 2: Convert to fraction form
    2,868,657.02/3,958,843.85 = 1,561,959.74/x
  3. Step 3: Cross multiply
    2,868,657.02x = 3,958,843.85 × 1,561,959.74
  4. Step 4: Simplify right side
    2,868,657.02x = 6,183,554,690,465.41
  5. Step 5: Solve for x
    x = 6,183,554,690,465.41/2,868,657.02
  6. Step 6: Final answer
    x = 2,155,557.34

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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.