Home / 486,975.15-672,092.44-280,239.28

Finding the Fourth Proportional to 486,975.15, 672,092.44 and 280,239.28

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Solution

The fourth proportional to 486,975.15, 672,092.44 and 280,239.28 is: 386,768.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,975.15 : 672,092.44 = 280,239.28 : x
  2. Step 2: Convert to fraction form
    486,975.15/672,092.44 = 280,239.28/x
  3. Step 3: Cross multiply
    486,975.15x = 672,092.44 × 280,239.28
  4. Step 4: Simplify right side
    486,975.15x = 188,346,701,479.04
  5. Step 5: Solve for x
    x = 188,346,701,479.04/486,975.15
  6. Step 6: Final answer
    x = 386,768.61

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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.