Home / 658,093,811.25-987,251,696.86-221,290,661.91

Finding the Fourth Proportional to 658,093,811.25, 987,251,696.86 and 221,290,661.91

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Solution

The fourth proportional to 658,093,811.25, 987,251,696.86 and 221,290,661.91 is: 331,973,311.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,093,811.25 : 987,251,696.86 = 221,290,661.91 : x
  2. Step 2: Convert to fraction form
    658,093,811.25/987,251,696.86 = 221,290,661.91/x
  3. Step 3: Cross multiply
    658,093,811.25x = 987,251,696.86 × 221,290,661.91
  4. Step 4: Simplify right side
    658,093,811.25x = 218,469,581,469,920,064
  5. Step 5: Solve for x
    x = 218,469,581,469,920,064/658,093,811.25
  6. Step 6: Final answer
    x = 331,973,311.00

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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.