Home / 486,979.40-672,018.67-272,121.23

Finding the Fourth Proportional to 486,979.40, 672,018.67 and 272,121.23

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Solution

The fourth proportional to 486,979.40, 672,018.67 and 272,121.23 is: 375,520.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,979.40 : 672,018.67 = 272,121.23 : x
  2. Step 2: Convert to fraction form
    486,979.40/672,018.67 = 272,121.23/x
  3. Step 3: Cross multiply
    486,979.40x = 672,018.67 × 272,121.23
  4. Step 4: Simplify right side
    486,979.40x = 182,870,543,022.97
  5. Step 5: Solve for x
    x = 182,870,543,022.97/486,979.40
  6. Step 6: Final answer
    x = 375,520.08

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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.