Home / 658,093,809.87-987,251,694.80-221,290,660.53

Finding the Fourth Proportional to 658,093,809.87, 987,251,694.80 and 221,290,660.53

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Solution

The fourth proportional to 658,093,809.87, 987,251,694.80 and 221,290,660.53 is: 331,973,308.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,093,809.87 : 987,251,694.80 = 221,290,660.53 : x
  2. Step 2: Convert to fraction form
    658,093,809.87/987,251,694.80 = 221,290,660.53/x
  3. Step 3: Cross multiply
    658,093,809.87x = 987,251,694.80 × 221,290,660.53
  4. Step 4: Simplify right side
    658,093,809.87x = 218,469,579,650,547,520
  5. Step 5: Solve for x
    x = 218,469,579,650,547,520/658,093,809.87
  6. Step 6: Final answer
    x = 331,973,308.93

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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.