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Finding the Fourth Proportional to 486,975, 672,092.27 and 280,239.15

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Solution

The fourth proportional to 486,975, 672,092.27 and 280,239.15 is: 386,768.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,975 : 672,092.27 = 280,239.15 : x
  2. Step 2: Convert to fraction form
    486,975/672,092.27 = 280,239.15/x
  3. Step 3: Cross multiply
    486,975x = 672,092.27 × 280,239.15
  4. Step 4: Simplify right side
    486,975x = 188,346,566,466.37
  5. Step 5: Solve for x
    x = 188,346,566,466.37/486,975
  6. Step 6: Final answer
    x = 386,768.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.