Home / 643,259,287,554.20-964,663,420,311.78-189,857,215,071.80

Finding the Fourth Proportional to 643,259,287,554.20, 964,663,420,311.78 and 189,857,215,071.80

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Solution

The fourth proportional to 643,259,287,554.20, 964,663,420,311.78 and 189,857,215,071.80 is: 284,719,263,298.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,259,287,554.20 : 964,663,420,311.78 = 189,857,215,071.80 : x
  2. Step 2: Convert to fraction form
    643,259,287,554.20/964,663,420,311.78 = 189,857,215,071.80/x
  3. Step 3: Cross multiply
    643,259,287,554.20x = 964,663,420,311.78 × 189,857,215,071.80
  4. Step 4: Simplify right side
    643,259,287,554.20x = 183,148,310,462,031,802,138,624
  5. Step 5: Solve for x
    x = 183,148,310,462,031,802,138,624/643,259,287,554.20
  6. Step 6: Final answer
    x = 284,719,263,298.01

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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.