Home / 642,820.24-964,238.60-443,087.02

Finding the Fourth Proportional to 642,820.24, 964,238.60 and 443,087.02

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Solution

The fourth proportional to 642,820.24, 964,238.60 and 443,087.02 is: 664,636.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,820.24 : 964,238.60 = 443,087.02 : x
  2. Step 2: Convert to fraction form
    642,820.24/964,238.60 = 443,087.02/x
  3. Step 3: Cross multiply
    642,820.24x = 964,238.60 × 443,087.02
  4. Step 4: Simplify right side
    642,820.24x = 427,241,607,842.97
  5. Step 5: Solve for x
    x = 427,241,607,842.97/642,820.24
  6. Step 6: Final answer
    x = 664,636.21

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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.