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Finding the Fourth Proportional to 485,698.80, 727,770.60 and 307,887.60

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Solution

The fourth proportional to 485,698.80, 727,770.60 and 307,887.60 is: 461,338.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,698.80 : 727,770.60 = 307,887.60 : x
  2. Step 2: Convert to fraction form
    485,698.80/727,770.60 = 307,887.60/x
  3. Step 3: Cross multiply
    485,698.80x = 727,770.60 × 307,887.60
  4. Step 4: Simplify right side
    485,698.80x = 224,071,543,384.56
  5. Step 5: Solve for x
    x = 224,071,543,384.56/485,698.80
  6. Step 6: Final answer
    x = 461,338.47

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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.