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Finding the Fourth Proportional to 515,072.20, 770,858.70 and 452,086.60

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Solution

The fourth proportional to 515,072.20, 770,858.70 and 452,086.60 is: 676,594.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,072.20 : 770,858.70 = 452,086.60 : x
  2. Step 2: Convert to fraction form
    515,072.20/770,858.70 = 452,086.60/x
  3. Step 3: Cross multiply
    515,072.20x = 770,858.70 × 452,086.60
  4. Step 4: Simplify right side
    515,072.20x = 348,494,888,763.42
  5. Step 5: Solve for x
    x = 348,494,888,763.42/515,072.20
  6. Step 6: Final answer
    x = 676,594.25

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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.