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Finding the Fourth Proportional to 521,290.80, 783,606.60 and 484,311.60

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Solution

The fourth proportional to 521,290.80, 783,606.60 and 484,311.60 is: 728,019.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,290.80 : 783,606.60 = 484,311.60 : x
  2. Step 2: Convert to fraction form
    521,290.80/783,606.60 = 484,311.60/x
  3. Step 3: Cross multiply
    521,290.80x = 783,606.60 × 484,311.60
  4. Step 4: Simplify right side
    521,290.80x = 379,509,766,216.56
  5. Step 5: Solve for x
    x = 379,509,766,216.56/521,290.80
  6. Step 6: Final answer
    x = 728,019.31

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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.