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Finding the Fourth Proportional to 539,987.80, 809,981.70 and 363,040.60

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Solution

The fourth proportional to 539,987.80, 809,981.70 and 363,040.60 is: 544,560.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,987.80 : 809,981.70 = 363,040.60 : x
  2. Step 2: Convert to fraction form
    539,987.80/809,981.70 = 363,040.60/x
  3. Step 3: Cross multiply
    539,987.80x = 809,981.70 × 363,040.60
  4. Step 4: Simplify right side
    539,987.80x = 294,056,242,357.02
  5. Step 5: Solve for x
    x = 294,056,242,357.02/539,987.80
  6. Step 6: Final answer
    x = 544,560.90

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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.