Home / 1,138,945.81-1,572,141.03-655,703.56

Finding the Fourth Proportional to 1,138,945.81, 1,572,141.03 and 655,703.56

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Solution

The fourth proportional to 1,138,945.81, 1,572,141.03 and 655,703.56 is: 905,098.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,945.81 : 1,572,141.03 = 655,703.56 : x
  2. Step 2: Convert to fraction form
    1,138,945.81/1,572,141.03 = 655,703.56/x
  3. Step 3: Cross multiply
    1,138,945.81x = 1,572,141.03 × 655,703.56
  4. Step 4: Simplify right side
    1,138,945.81x = 1,030,858,464,544.39
  5. Step 5: Solve for x
    x = 1,030,858,464,544.39/1,138,945.81
  6. Step 6: Final answer
    x = 905,098.78

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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.