Home / 1,298,827,517.63-1,948,566,118.91-378,703,856.25

Finding the Fourth Proportional to 1,298,827,517.63, 1,948,566,118.91 and 378,703,856.25

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Solution

The fourth proportional to 1,298,827,517.63, 1,948,566,118.91 and 378,703,856.25 is: 568,150,499.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,827,517.63 : 1,948,566,118.91 = 378,703,856.25 : x
  2. Step 2: Convert to fraction form
    1,298,827,517.63/1,948,566,118.91 = 378,703,856.25/x
  3. Step 3: Cross multiply
    1,298,827,517.63x = 1,948,566,118.91 × 378,703,856.25
  4. Step 4: Simplify right side
    1,298,827,517.63x = 737,929,503,387,419,520
  5. Step 5: Solve for x
    x = 737,929,503,387,419,520/1,298,827,517.63
  6. Step 6: Final answer
    x = 568,150,499.87

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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.