Home / 642,821.92-964,241.09-443,088.68

Finding the Fourth Proportional to 642,821.92, 964,241.09 and 443,088.68

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Solution

The fourth proportional to 642,821.92, 964,241.09 and 443,088.68 is: 664,638.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,821.92 : 964,241.09 = 443,088.68 : x
  2. Step 2: Convert to fraction form
    642,821.92/964,241.09 = 443,088.68/x
  3. Step 3: Cross multiply
    642,821.92x = 964,241.09 × 443,088.68
  4. Step 4: Simplify right side
    642,821.92x = 427,244,311,769.86
  5. Step 5: Solve for x
    x = 427,244,311,769.86/642,821.92
  6. Step 6: Final answer
    x = 664,638.68

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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.