Home / 642,078,863.83-962,882,058.74-221,793,278.15

Finding the Fourth Proportional to 642,078,863.83, 962,882,058.74 and 221,793,278.15

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Solution

The fourth proportional to 642,078,863.83, 962,882,058.74 and 221,793,278.15 is: 332,608,313.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,078,863.83 : 962,882,058.74 = 221,793,278.15 : x
  2. Step 2: Convert to fraction form
    642,078,863.83/962,882,058.74 = 221,793,278.15/x
  3. Step 3: Cross multiply
    642,078,863.83x = 962,882,058.74 × 221,793,278.15
  4. Step 4: Simplify right side
    642,078,863.83x = 213,560,768,279,765,472
  5. Step 5: Solve for x
    x = 213,560,768,279,765,472/642,078,863.83
  6. Step 6: Final answer
    x = 332,608,313.89

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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.