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Finding the Fourth Proportional to 997,129.98, 1,375,991.55 and 567,369.90

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Solution

The fourth proportional to 997,129.98, 1,375,991.55 and 567,369.90 is: 782,943.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    997,129.98 : 1,375,991.55 = 567,369.90 : x
  2. Step 2: Convert to fraction form
    997,129.98/1,375,991.55 = 567,369.90/x
  3. Step 3: Cross multiply
    997,129.98x = 1,375,991.55 × 567,369.90
  4. Step 4: Simplify right side
    997,129.98x = 780,696,188,124.35
  5. Step 5: Solve for x
    x = 780,696,188,124.35/997,129.98
  6. Step 6: Final answer
    x = 782,943.25

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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.