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Finding the Fourth Proportional to 667,307,714.70, 1,000,961,572.05 and 621,958,082.70

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Solution

The fourth proportional to 667,307,714.70, 1,000,961,572.05 and 621,958,082.70 is: 932,937,124.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,307,714.70 : 1,000,961,572.05 = 621,958,082.70 : x
  2. Step 2: Convert to fraction form
    667,307,714.70/1,000,961,572.05 = 621,958,082.70/x
  3. Step 3: Cross multiply
    667,307,714.70x = 1,000,961,572.05 × 621,958,082.70
  4. Step 4: Simplify right side
    667,307,714.70x = 622,556,140,208,595,968
  5. Step 5: Solve for x
    x = 622,556,140,208,595,968/667,307,714.70
  6. Step 6: Final answer
    x = 932,937,124.05

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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.