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Finding the Fourth Proportional to 629,784,649.76, 868,995,199.86 and 365,406,038.28

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Solution

The fourth proportional to 629,784,649.76, 868,995,199.86 and 365,406,038.28 is: 504,197,892.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,784,649.76 : 868,995,199.86 = 365,406,038.28 : x
  2. Step 2: Convert to fraction form
    629,784,649.76/868,995,199.86 = 365,406,038.28/x
  3. Step 3: Cross multiply
    629,784,649.76x = 868,995,199.86 × 365,406,038.28
  4. Step 4: Simplify right side
    629,784,649.76x = 317,536,093,268,854,080
  5. Step 5: Solve for x
    x = 317,536,093,268,854,080/629,784,649.76
  6. Step 6: Final answer
    x = 504,197,892.71

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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.