Home / 486,979.37-672,018.64-272,121.20

Finding the Fourth Proportional to 486,979.37, 672,018.64 and 272,121.20

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Solution

The fourth proportional to 486,979.37, 672,018.64 and 272,121.20 is: 375,520.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,979.37 : 672,018.64 = 272,121.20 : x
  2. Step 2: Convert to fraction form
    486,979.37/672,018.64 = 272,121.20/x
  3. Step 3: Cross multiply
    486,979.37x = 672,018.64 × 272,121.20
  4. Step 4: Simplify right side
    486,979.37x = 182,870,515,698.52
  5. Step 5: Solve for x
    x = 182,870,515,698.52/486,979.37
  6. Step 6: Final answer
    x = 375,520.05

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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.