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Finding the Fourth Proportional to 418,356.51, 627,468.71 and 347,732.79

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Solution

The fourth proportional to 418,356.51, 627,468.71 and 347,732.79 is: 521,544.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,356.51 : 627,468.71 = 347,732.79 : x
  2. Step 2: Convert to fraction form
    418,356.51/627,468.71 = 347,732.79/x
  3. Step 3: Cross multiply
    418,356.51x = 627,468.71 × 347,732.79
  4. Step 4: Simplify right side
    418,356.51x = 218,191,443,427.34
  5. Step 5: Solve for x
    x = 218,191,443,427.34/418,356.51
  6. Step 6: Final answer
    x = 521,544.28

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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.