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Finding the Fourth Proportional to 629,784,652.77, 868,995,204 and 365,406,041.28

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Solution

The fourth proportional to 629,784,652.77, 868,995,204 and 365,406,041.28 is: 504,197,896.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,784,652.77 : 868,995,204 = 365,406,041.28 : x
  2. Step 2: Convert to fraction form
    629,784,652.77/868,995,204 = 365,406,041.28/x
  3. Step 3: Cross multiply
    629,784,652.77x = 868,995,204 × 365,406,041.28
  4. Step 4: Simplify right side
    629,784,652.77x = 317,536,097,384,945,984
  5. Step 5: Solve for x
    x = 317,536,097,384,945,984/629,784,652.77
  6. Step 6: Final answer
    x = 504,197,896.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.