Home / 825,409.28-1,139,112.24-462,949.40

Finding the Fourth Proportional to 825,409.28, 1,139,112.24 and 462,949.40

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Solution

The fourth proportional to 825,409.28, 1,139,112.24 and 462,949.40 is: 638,896.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,409.28 : 1,139,112.24 = 462,949.40 : x
  2. Step 2: Convert to fraction form
    825,409.28/1,139,112.24 = 462,949.40/x
  3. Step 3: Cross multiply
    825,409.28x = 1,139,112.24 × 462,949.40
  4. Step 4: Simplify right side
    825,409.28x = 527,351,328,040.66
  5. Step 5: Solve for x
    x = 527,351,328,040.66/825,409.28
  6. Step 6: Final answer
    x = 638,896.78

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Double scale
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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.