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Finding the Fourth Proportional to 1,811,793.90, 2,718,018.90 and 910,968.60

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Solution

The fourth proportional to 1,811,793.90, 2,718,018.90 and 910,968.60 is: 1,366,617.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,811,793.90 : 2,718,018.90 = 910,968.60 : x
  2. Step 2: Convert to fraction form
    1,811,793.90/2,718,018.90 = 910,968.60/x
  3. Step 3: Cross multiply
    1,811,793.90x = 2,718,018.90 × 910,968.60
  4. Step 4: Simplify right side
    1,811,793.90x = 2,476,029,872,106.54
  5. Step 5: Solve for x
    x = 2,476,029,872,106.54/1,811,793.90
  6. Step 6: Final answer
    x = 1,366,617.84

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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.