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Finding the Fourth Proportional to 615,435.12, 923,148.54 and 331,259.58

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Solution

The fourth proportional to 615,435.12, 923,148.54 and 331,259.58 is: 496,887.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,435.12 : 923,148.54 = 331,259.58 : x
  2. Step 2: Convert to fraction form
    615,435.12/923,148.54 = 331,259.58/x
  3. Step 3: Cross multiply
    615,435.12x = 923,148.54 × 331,259.58
  4. Step 4: Simplify right side
    615,435.12x = 305,801,797,638.01
  5. Step 5: Solve for x
    x = 305,801,797,638.01/615,435.12
  6. Step 6: Final answer
    x = 496,887.14

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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.