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Finding the Fourth Proportional to 808,731,000.20, 1,213,096,500.30 and 800,668,843.40

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Solution

The fourth proportional to 808,731,000.20, 1,213,096,500.30 and 800,668,843.40 is: 1,201,003,265.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,731,000.20 : 1,213,096,500.30 = 800,668,843.40 : x
  2. Step 2: Convert to fraction form
    808,731,000.20/1,213,096,500.30 = 800,668,843.40/x
  3. Step 3: Cross multiply
    808,731,000.20x = 1,213,096,500.30 × 800,668,843.40
  4. Step 4: Simplify right side
    808,731,000.20x = 971,288,571,827,788,672
  5. Step 5: Solve for x
    x = 971,288,571,827,788,672/808,731,000.20
  6. Step 6: Final answer
    x = 1,201,003,265.10

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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.