Home / 825,409.20-1,139,536.62-631,459.56

Finding the Fourth Proportional to 825,409.20, 1,139,536.62 and 631,459.56

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Solution

The fourth proportional to 825,409.20, 1,139,536.62 and 631,459.56 is: 871,775.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,409.20 : 1,139,536.62 = 631,459.56 : x
  2. Step 2: Convert to fraction form
    825,409.20/1,139,536.62 = 631,459.56/x
  3. Step 3: Cross multiply
    825,409.20x = 1,139,536.62 × 631,459.56
  4. Step 4: Simplify right side
    825,409.20x = 719,571,292,669.09
  5. Step 5: Solve for x
    x = 719,571,292,669.09/825,409.20
  6. Step 6: Final answer
    x = 871,775.23

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1.5x scale

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.