Home / 1,391,004,044.80-2,086,506,067.20-665,409,932.80

Finding the Fourth Proportional to 1,391,004,044.80, 2,086,506,067.20 and 665,409,932.80

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Solution

The fourth proportional to 1,391,004,044.80, 2,086,506,067.20 and 665,409,932.80 is: 998,114,899.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,004,044.80 : 2,086,506,067.20 = 665,409,932.80 : x
  2. Step 2: Convert to fraction form
    1,391,004,044.80/2,086,506,067.20 = 665,409,932.80/x
  3. Step 3: Cross multiply
    1,391,004,044.80x = 2,086,506,067.20 × 665,409,932.80
  4. Step 4: Simplify right side
    1,391,004,044.80x = 1,388,381,861,962,344,192
  5. Step 5: Solve for x
    x = 1,388,381,861,962,344,192/1,391,004,044.80
  6. Step 6: Final answer
    x = 998,114,899.20

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1.5x scale

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.