Home / 678,729,385,215.30-1,016,941,979,286.60-409,552,786,222.50

Finding the Fourth Proportional to 678,729,385,215.30, 1,016,941,979,286.60 and 409,552,786,222.50

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Solution

The fourth proportional to 678,729,385,215.30, 1,016,941,979,286.60 and 409,552,786,222.50 is: 613,633,990,388.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,729,385,215.30 : 1,016,941,979,286.60 = 409,552,786,222.50 : x
  2. Step 2: Convert to fraction form
    678,729,385,215.30/1,016,941,979,286.60 = 409,552,786,222.50/x
  3. Step 3: Cross multiply
    678,729,385,215.30x = 1,016,941,979,286.60 × 409,552,786,222.50
  4. Step 4: Simplify right side
    678,729,385,215.30x = 416,491,421,043,450,921,877,504
  5. Step 5: Solve for x
    x = 416,491,421,043,450,921,877,504/678,729,385,215.30
  6. Step 6: Final answer
    x = 613,633,990,388.28

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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.