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Finding the Fourth Proportional to 643,807,572.84, 888,403,796.10 and 365,349,093.64

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Solution

The fourth proportional to 643,807,572.84, 888,403,796.10 and 365,349,093.64 is: 504,153,003.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,807,572.84 : 888,403,796.10 = 365,349,093.64 : x
  2. Step 2: Convert to fraction form
    643,807,572.84/888,403,796.10 = 365,349,093.64/x
  3. Step 3: Cross multiply
    643,807,572.84x = 888,403,796.10 × 365,349,093.64
  4. Step 4: Simplify right side
    643,807,572.84x = 324,577,521,689,249,344
  5. Step 5: Solve for x
    x = 324,577,521,689,249,344/643,807,572.84
  6. Step 6: Final answer
    x = 504,153,003.76

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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.