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Finding the Fourth Proportional to 665,396,659.70, 998,000,511.15 and 228,717,494.90

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Solution

The fourth proportional to 665,396,659.70, 998,000,511.15 and 228,717,494.90 is: 343,043,767.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,396,659.70 : 998,000,511.15 = 228,717,494.90 : x
  2. Step 2: Convert to fraction form
    665,396,659.70/998,000,511.15 = 228,717,494.90/x
  3. Step 3: Cross multiply
    665,396,659.70x = 998,000,511.15 × 228,717,494.90
  4. Step 4: Simplify right side
    665,396,659.70x = 228,260,176,819,147,520
  5. Step 5: Solve for x
    x = 228,260,176,819,147,520/665,396,659.70
  6. Step 6: Final answer
    x = 343,043,767.19

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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.