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Finding the Fourth Proportional to 723,003, 1,085,154.96 and 386,331.44

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Solution

The fourth proportional to 723,003, 1,085,154.96 and 386,331.44 is: 579,844.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,003 : 1,085,154.96 = 386,331.44 : x
  2. Step 2: Convert to fraction form
    723,003/1,085,154.96 = 386,331.44/x
  3. Step 3: Cross multiply
    723,003x = 1,085,154.96 × 386,331.44
  4. Step 4: Simplify right side
    723,003x = 419,229,478,319.94
  5. Step 5: Solve for x
    x = 419,229,478,319.94/723,003
  6. Step 6: Final answer
    x = 579,844.73

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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.