Home / 642,078,863.02-962,882,057.52-221,793,277.33

Finding the Fourth Proportional to 642,078,863.02, 962,882,057.52 and 221,793,277.33

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Solution

The fourth proportional to 642,078,863.02, 962,882,057.52 and 221,793,277.33 is: 332,608,312.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,078,863.02 : 962,882,057.52 = 221,793,277.33 : x
  2. Step 2: Convert to fraction form
    642,078,863.02/962,882,057.52 = 221,793,277.33/x
  3. Step 3: Cross multiply
    642,078,863.02x = 962,882,057.52 × 221,793,277.33
  4. Step 4: Simplify right side
    642,078,863.02x = 213,560,767,219,614,368
  5. Step 5: Solve for x
    x = 213,560,767,219,614,368/642,078,863.02
  6. Step 6: Final answer
    x = 332,608,312.65

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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.