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Finding the Fourth Proportional to 646,671.22, 892,406.46 and 374,896.64

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Solution

The fourth proportional to 646,671.22, 892,406.46 and 374,896.64 is: 517,357.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,671.22 : 892,406.46 = 374,896.64 : x
  2. Step 2: Convert to fraction form
    646,671.22/892,406.46 = 374,896.64/x
  3. Step 3: Cross multiply
    646,671.22x = 892,406.46 × 374,896.64
  4. Step 4: Simplify right side
    646,671.22x = 334,560,183,368.29
  5. Step 5: Solve for x
    x = 334,560,183,368.29/646,671.22
  6. Step 6: Final answer
    x = 517,357.47

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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.