Home / 842,022,221.82-1,263,152,020.17-259,803,805.74

Finding the Fourth Proportional to 842,022,221.82, 1,263,152,020.17 and 259,803,805.74

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Solution

The fourth proportional to 842,022,221.82, 1,263,152,020.17 and 259,803,805.74 is: 389,742,329.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,022,221.82 : 1,263,152,020.17 = 259,803,805.74 : x
  2. Step 2: Convert to fraction form
    842,022,221.82/1,263,152,020.17 = 259,803,805.74/x
  3. Step 3: Cross multiply
    842,022,221.82x = 1,263,152,020.17 × 259,803,805.74
  4. Step 4: Simplify right side
    842,022,221.82x = 328,171,702,068,335,296
  5. Step 5: Solve for x
    x = 328,171,702,068,335,296/842,022,221.82
  6. Step 6: Final answer
    x = 389,742,329.32

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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.