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Finding the Fourth Proportional to 449,147.40, 673,721.10 and 416,670.45

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Solution

The fourth proportional to 449,147.40, 673,721.10 and 416,670.45 is: 625,005.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,147.40 : 673,721.10 = 416,670.45 : x
  2. Step 2: Convert to fraction form
    449,147.40/673,721.10 = 416,670.45/x
  3. Step 3: Cross multiply
    449,147.40x = 673,721.10 × 416,670.45
  4. Step 4: Simplify right side
    449,147.40x = 280,719,673,911.50
  5. Step 5: Solve for x
    x = 280,719,673,911.50/449,147.40
  6. Step 6: Final answer
    x = 625,005.68

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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.