Home / 646,731.12-892,509.18-371,139.39

Finding the Fourth Proportional to 646,731.12, 892,509.18 and 371,139.39

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Solution

The fourth proportional to 646,731.12, 892,509.18 and 371,139.39 is: 512,183.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,731.12 : 892,509.18 = 371,139.39 : x
  2. Step 2: Convert to fraction form
    646,731.12/892,509.18 = 371,139.39/x
  3. Step 3: Cross multiply
    646,731.12x = 892,509.18 × 371,139.39
  4. Step 4: Simplify right side
    646,731.12x = 331,245,307,844.14
  5. Step 5: Solve for x
    x = 331,245,307,844.14/646,731.12
  6. Step 6: Final answer
    x = 512,183.97

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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.