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Finding the Fourth Proportional to 451,340.50, 672,975.64 and 438,940.21

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Solution

The fourth proportional to 451,340.50, 672,975.64 and 438,940.21 is: 654,486.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,340.50 : 672,975.64 = 438,940.21 : x
  2. Step 2: Convert to fraction form
    451,340.50/672,975.64 = 438,940.21/x
  3. Step 3: Cross multiply
    451,340.50x = 672,975.64 × 438,940.21
  4. Step 4: Simplify right side
    451,340.50x = 295,396,063,186.91
  5. Step 5: Solve for x
    x = 295,396,063,186.91/451,340.50
  6. Step 6: Final answer
    x = 654,486.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.