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Finding the Fourth Proportional to 521,309.80, 783,635.10 and 484,330.60

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Solution

The fourth proportional to 521,309.80, 783,635.10 and 484,330.60 is: 728,047.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,309.80 : 783,635.10 = 484,330.60 : x
  2. Step 2: Convert to fraction form
    521,309.80/783,635.10 = 484,330.60/x
  3. Step 3: Cross multiply
    521,309.80x = 783,635.10 × 484,330.60
  4. Step 4: Simplify right side
    521,309.80x = 379,538,458,164.06
  5. Step 5: Solve for x
    x = 379,538,458,164.06/521,309.80
  6. Step 6: Final answer
    x = 728,047.81

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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.