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Finding the Fourth Proportional to 515,921.20, 773,225.70 and 459,496.60

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Solution

The fourth proportional to 515,921.20, 773,225.70 and 459,496.60 is: 688,660.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,921.20 : 773,225.70 = 459,496.60 : x
  2. Step 2: Convert to fraction form
    515,921.20/773,225.70 = 459,496.60/x
  3. Step 3: Cross multiply
    515,921.20x = 773,225.70 × 459,496.60
  4. Step 4: Simplify right side
    515,921.20x = 355,294,580,182.62
  5. Step 5: Solve for x
    x = 355,294,580,182.62/515,921.20
  6. Step 6: Final answer
    x = 688,660.56

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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.