Home / 1,421,846.10-1,961,928.14-809,921.11

Finding the Fourth Proportional to 1,421,846.10, 1,961,928.14 and 809,921.11

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Solution

The fourth proportional to 1,421,846.10, 1,961,928.14 and 809,921.11 is: 1,117,566.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,846.10 : 1,961,928.14 = 809,921.11 : x
  2. Step 2: Convert to fraction form
    1,421,846.10/1,961,928.14 = 809,921.11/x
  3. Step 3: Cross multiply
    1,421,846.10x = 1,961,928.14 × 809,921.11
  4. Step 4: Simplify right side
    1,421,846.10x = 1,589,007,012,600.12
  5. Step 5: Solve for x
    x = 1,589,007,012,600.12/1,421,846.10
  6. Step 6: Final answer
    x = 1,117,566.11

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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.