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Finding the Fourth Proportional to 663,957,280.80, 996,573,650.40 and 336,802,201.20

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Solution

The fourth proportional to 663,957,280.80, 996,573,650.40 and 336,802,201.20 is: 505,526,799.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,957,280.80 : 996,573,650.40 = 336,802,201.20 : x
  2. Step 2: Convert to fraction form
    663,957,280.80/996,573,650.40 = 336,802,201.20/x
  3. Step 3: Cross multiply
    663,957,280.80x = 996,573,650.40 × 336,802,201.20
  4. Step 4: Simplify right side
    663,957,280.80x = 335,648,199,112,639,232
  5. Step 5: Solve for x
    x = 335,648,199,112,639,232/663,957,280.80
  6. Step 6: Final answer
    x = 505,526,799.42

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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.