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Finding the Fourth Proportional to 418,818.87, 628,228.37 and 292,705.44

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Solution

The fourth proportional to 418,818.87, 628,228.37 and 292,705.44 is: 439,058.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,818.87 : 628,228.37 = 292,705.44 : x
  2. Step 2: Convert to fraction form
    418,818.87/628,228.37 = 292,705.44/x
  3. Step 3: Cross multiply
    418,818.87x = 628,228.37 × 292,705.44
  4. Step 4: Simplify right side
    418,818.87x = 183,885,861,461.33
  5. Step 5: Solve for x
    x = 183,885,861,461.33/418,818.87
  6. Step 6: Final answer
    x = 439,058.21

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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.