Home / 825,411.70-1,139,540.07-631,462.06

Finding the Fourth Proportional to 825,411.70, 1,139,540.07 and 631,462.06

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Solution

The fourth proportional to 825,411.70, 1,139,540.07 and 631,462.06 is: 871,778.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,411.70 : 1,139,540.07 = 631,462.06 : x
  2. Step 2: Convert to fraction form
    825,411.70/1,139,540.07 = 631,462.06/x
  3. Step 3: Cross multiply
    825,411.70x = 1,139,540.07 × 631,462.06
  4. Step 4: Simplify right side
    825,411.70x = 719,576,320,054.74
  5. Step 5: Solve for x
    x = 719,576,320,054.74/825,411.70
  6. Step 6: Final answer
    x = 871,778.68

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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.