Home / 642,844.67-964,275.20-443,111.43

Finding the Fourth Proportional to 642,844.67, 964,275.20 and 443,111.43

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Solution

The fourth proportional to 642,844.67, 964,275.20 and 443,111.43 is: 664,672.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,844.67 : 964,275.20 = 443,111.43 : x
  2. Step 2: Convert to fraction form
    642,844.67/964,275.20 = 443,111.43/x
  3. Step 3: Cross multiply
    642,844.67x = 964,275.20 × 443,111.43
  4. Step 4: Simplify right side
    642,844.67x = 427,281,362,785.54
  5. Step 5: Solve for x
    x = 427,281,362,785.54/642,844.67
  6. Step 6: Final answer
    x = 664,672.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.