Home / 1,191,868.40-1,643,168.40-809,230.88

Finding the Fourth Proportional to 1,191,868.40, 1,643,168.40 and 809,230.88

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Solution

The fourth proportional to 1,191,868.40, 1,643,168.40 and 809,230.88 is: 1,115,645.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,868.40 : 1,643,168.40 = 809,230.88 : x
  2. Step 2: Convert to fraction form
    1,191,868.40/1,643,168.40 = 809,230.88/x
  3. Step 3: Cross multiply
    1,191,868.40x = 1,643,168.40 × 809,230.88
  4. Step 4: Simplify right side
    1,191,868.40x = 1,329,702,610,320.19
  5. Step 5: Solve for x
    x = 1,329,702,610,320.19/1,191,868.40
  6. Step 6: Final answer
    x = 1,115,645.49

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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.