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Finding the Fourth Proportional to 842,679.18, 1,162,809 and 480,027.06

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Solution

The fourth proportional to 842,679.18, 1,162,809 and 480,027.06 is: 662,387.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,679.18 : 1,162,809 = 480,027.06 : x
  2. Step 2: Convert to fraction form
    842,679.18/1,162,809 = 480,027.06/x
  3. Step 3: Cross multiply
    842,679.18x = 1,162,809 × 480,027.06
  4. Step 4: Simplify right side
    842,679.18x = 558,179,785,611.54
  5. Step 5: Solve for x
    x = 558,179,785,611.54/842,679.18
  6. Step 6: Final answer
    x = 662,387.06

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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.