Home / 646,650.56-892,342.32-356,205.20

Finding the Fourth Proportional to 646,650.56, 892,342.32 and 356,205.20

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Solution

The fourth proportional to 646,650.56, 892,342.32 and 356,205.20 is: 491,543.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,650.56 : 892,342.32 = 356,205.20 : x
  2. Step 2: Convert to fraction form
    646,650.56/892,342.32 = 356,205.20/x
  3. Step 3: Cross multiply
    646,650.56x = 892,342.32 × 356,205.20
  4. Step 4: Simplify right side
    646,650.56x = 317,856,974,564.06
  5. Step 5: Solve for x
    x = 317,856,974,564.06/646,650.56
  6. Step 6: Final answer
    x = 491,543.65

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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.