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Finding the Fourth Proportional to 1,811,793.40, 2,718,018.15 and 910,968.10

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Solution

The fourth proportional to 1,811,793.40, 2,718,018.15 and 910,968.10 is: 1,366,617.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,811,793.40 : 2,718,018.15 = 910,968.10 : x
  2. Step 2: Convert to fraction form
    1,811,793.40/2,718,018.15 = 910,968.10/x
  3. Step 3: Cross multiply
    1,811,793.40x = 2,718,018.15 × 910,968.10
  4. Step 4: Simplify right side
    1,811,793.40x = 2,476,027,829,871.01
  5. Step 5: Solve for x
    x = 2,476,027,829,871.01/1,811,793.40
  6. Step 6: Final answer
    x = 1,366,617.09

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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.