Home / 643,259,287,555.20-964,663,420,313.28-189,857,215,072.80

Finding the Fourth Proportional to 643,259,287,555.20, 964,663,420,313.28 and 189,857,215,072.80

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Solution

The fourth proportional to 643,259,287,555.20, 964,663,420,313.28 and 189,857,215,072.80 is: 284,719,263,299.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,259,287,555.20 : 964,663,420,313.28 = 189,857,215,072.80 : x
  2. Step 2: Convert to fraction form
    643,259,287,555.20/964,663,420,313.28 = 189,857,215,072.80/x
  3. Step 3: Cross multiply
    643,259,287,555.20x = 964,663,420,313.28 × 189,857,215,072.80
  4. Step 4: Simplify right side
    643,259,287,555.20x = 183,148,310,463,281,268,523,008
  5. Step 5: Solve for x
    x = 183,148,310,463,281,268,523,008/643,259,287,555.20
  6. Step 6: Final answer
    x = 284,719,263,299.51

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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.