Home / 688,371.27-949,896.66-398,001.48

Finding the Fourth Proportional to 688,371.27, 949,896.66 and 398,001.48

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Solution

The fourth proportional to 688,371.27, 949,896.66 and 398,001.48 is: 549,209.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,371.27 : 949,896.66 = 398,001.48 : x
  2. Step 2: Convert to fraction form
    688,371.27/949,896.66 = 398,001.48/x
  3. Step 3: Cross multiply
    688,371.27x = 949,896.66 × 398,001.48
  4. Step 4: Simplify right side
    688,371.27x = 378,060,277,517.08
  5. Step 5: Solve for x
    x = 378,060,277,517.08/688,371.27
  6. Step 6: Final answer
    x = 549,209.84

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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.