Home / 643,259,287,556.70-964,663,420,315.55-189,857,215,074.30

Finding the Fourth Proportional to 643,259,287,556.70, 964,663,420,315.55 and 189,857,215,074.30

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Solution

The fourth proportional to 643,259,287,556.70, 964,663,420,315.55 and 189,857,215,074.30 is: 284,719,263,301.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,259,287,556.70 : 964,663,420,315.55 = 189,857,215,074.30 : x
  2. Step 2: Convert to fraction form
    643,259,287,556.70/964,663,420,315.55 = 189,857,215,074.30/x
  3. Step 3: Cross multiply
    643,259,287,556.70x = 964,663,420,315.55 × 189,857,215,074.30
  4. Step 4: Simplify right side
    643,259,287,556.70x = 183,148,310,465,159,242,973,184
  5. Step 5: Solve for x
    x = 183,148,310,465,159,242,973,184/643,259,287,556.70
  6. Step 6: Final answer
    x = 284,719,263,301.76

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Double scale
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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.