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Finding the Fourth Proportional to 725,379.14, 1,000,730.76 and 438,401

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Solution

The fourth proportional to 725,379.14, 1,000,730.76 and 438,401 is: 604,816.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,379.14 : 1,000,730.76 = 438,401 : x
  2. Step 2: Convert to fraction form
    725,379.14/1,000,730.76 = 438,401/x
  3. Step 3: Cross multiply
    725,379.14x = 1,000,730.76 × 438,401
  4. Step 4: Simplify right side
    725,379.14x = 438,721,365,914.76
  5. Step 5: Solve for x
    x = 438,721,365,914.76/725,379.14
  6. Step 6: Final answer
    x = 604,816.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.