Home / 1,293,979.42-1,785,667.53-721,007.38

Finding the Fourth Proportional to 1,293,979.42, 1,785,667.53 and 721,007.38

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Solution

The fourth proportional to 1,293,979.42, 1,785,667.53 and 721,007.38 is: 994,976.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,979.42 : 1,785,667.53 = 721,007.38 : x
  2. Step 2: Convert to fraction form
    1,293,979.42/1,785,667.53 = 721,007.38/x
  3. Step 3: Cross multiply
    1,293,979.42x = 1,785,667.53 × 721,007.38
  4. Step 4: Simplify right side
    1,293,979.42x = 1,287,479,467,356.37
  5. Step 5: Solve for x
    x = 1,287,479,467,356.37/1,293,979.42
  6. Step 6: Final answer
    x = 994,976.77

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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.