Home / 1,269,431.92-1,904,154.40-427,990.96

Finding the Fourth Proportional to 1,269,431.92, 1,904,154.40 and 427,990.96

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Solution

The fourth proportional to 1,269,431.92, 1,904,154.40 and 427,990.96 is: 641,988.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269,431.92 : 1,904,154.40 = 427,990.96 : x
  2. Step 2: Convert to fraction form
    1,269,431.92/1,904,154.40 = 427,990.96/x
  3. Step 3: Cross multiply
    1,269,431.92x = 1,904,154.40 × 427,990.96
  4. Step 4: Simplify right side
    1,269,431.92x = 814,960,869,644.22
  5. Step 5: Solve for x
    x = 814,960,869,644.22/1,269,431.92
  6. Step 6: Final answer
    x = 641,988.64

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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.