Home / 1,254,921.40-1,731,786.86-711,160.78

Finding the Fourth Proportional to 1,254,921.40, 1,731,786.86 and 711,160.78

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Solution

The fourth proportional to 1,254,921.40, 1,731,786.86 and 711,160.78 is: 981,399.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254,921.40 : 1,731,786.86 = 711,160.78 : x
  2. Step 2: Convert to fraction form
    1,254,921.40/1,731,786.86 = 711,160.78/x
  3. Step 3: Cross multiply
    1,254,921.40x = 1,731,786.86 × 711,160.78
  4. Step 4: Simplify right side
    1,254,921.40x = 1,231,578,894,151.35
  5. Step 5: Solve for x
    x = 1,231,578,894,151.35/1,254,921.40
  6. Step 6: Final answer
    x = 981,399.23

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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.