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Finding the Fourth Proportional to 418,824.96, 627,999.42 and 285,866.16

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Solution

The fourth proportional to 418,824.96, 627,999.42 and 285,866.16 is: 428,636.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,824.96 : 627,999.42 = 285,866.16 : x
  2. Step 2: Convert to fraction form
    418,824.96/627,999.42 = 285,866.16/x
  3. Step 3: Cross multiply
    418,824.96x = 627,999.42 × 285,866.16
  4. Step 4: Simplify right side
    418,824.96x = 179,523,782,677.63
  5. Step 5: Solve for x
    x = 179,523,782,677.63/418,824.96
  6. Step 6: Final answer
    x = 428,636.78

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1.5x scale

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.