Home / 1,190,728.92-1,643,217.24-646,868.78

Finding the Fourth Proportional to 1,190,728.92, 1,643,217.24 and 646,868.78

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Solution

The fourth proportional to 1,190,728.92, 1,643,217.24 and 646,868.78 is: 892,685.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,728.92 : 1,643,217.24 = 646,868.78 : x
  2. Step 2: Convert to fraction form
    1,190,728.92/1,643,217.24 = 646,868.78/x
  3. Step 3: Cross multiply
    1,190,728.92x = 1,643,217.24 × 646,868.78
  4. Step 4: Simplify right side
    1,190,728.92x = 1,062,945,931,313.77
  5. Step 5: Solve for x
    x = 1,062,945,931,313.77/1,190,728.92
  6. Step 6: Final answer
    x = 892,685.07

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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.