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Finding the Fourth Proportional to 615,774.05, 923,927.16 and 331,131.90

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Solution

The fourth proportional to 615,774.05, 923,927.16 and 331,131.90 is: 496,840.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,774.05 : 923,927.16 = 331,131.90 : x
  2. Step 2: Convert to fraction form
    615,774.05/923,927.16 = 331,131.90/x
  3. Step 3: Cross multiply
    615,774.05x = 923,927.16 × 331,131.90
  4. Step 4: Simplify right side
    615,774.05x = 305,941,755,952.40
  5. Step 5: Solve for x
    x = 305,941,755,952.40/615,774.05
  6. Step 6: Final answer
    x = 496,840.94

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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.