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Finding the Fourth Proportional to 1,328,604,311.70, 1,992,906,467.55 and 775,338,801.30

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Solution

The fourth proportional to 1,328,604,311.70, 1,992,906,467.55 and 775,338,801.30 is: 1,163,008,201.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,604,311.70 : 1,992,906,467.55 = 775,338,801.30 : x
  2. Step 2: Convert to fraction form
    1,328,604,311.70/1,992,906,467.55 = 775,338,801.30/x
  3. Step 3: Cross multiply
    1,328,604,311.70x = 1,992,906,467.55 × 775,338,801.30
  4. Step 4: Simplify right side
    1,328,604,311.70x = 1,545,177,711,653,234,176
  5. Step 5: Solve for x
    x = 1,545,177,711,653,234,176/1,328,604,311.70
  6. Step 6: Final answer
    x = 1,163,008,201.95

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Double scale
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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.