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Finding the Fourth Proportional to 418,282.76, 627,358.26 and 347,658.86

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Solution

The fourth proportional to 418,282.76, 627,358.26 and 347,658.86 is: 521,433.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,282.76 : 627,358.26 = 347,658.86 : x
  2. Step 2: Convert to fraction form
    418,282.76/627,358.26 = 347,658.86/x
  3. Step 3: Cross multiply
    418,282.76x = 627,358.26 × 347,658.86
  4. Step 4: Simplify right side
    418,282.76x = 218,106,657,483.18
  5. Step 5: Solve for x
    x = 218,106,657,483.18/418,282.76
  6. Step 6: Final answer
    x = 521,433.53

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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.