Home / 825,928.15-1,238,629.78-561,388.63

Finding the Fourth Proportional to 825,928.15, 1,238,629.78 and 561,388.63

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Solution

The fourth proportional to 825,928.15, 1,238,629.78 and 561,388.63 is: 841,904.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,928.15 : 1,238,629.78 = 561,388.63 : x
  2. Step 2: Convert to fraction form
    825,928.15/1,238,629.78 = 561,388.63/x
  3. Step 3: Cross multiply
    825,928.15x = 1,238,629.78 × 561,388.63
  4. Step 4: Simplify right side
    825,928.15x = 695,352,672,464.46
  5. Step 5: Solve for x
    x = 695,352,672,464.46/825,928.15
  6. Step 6: Final answer
    x = 841,904.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.