Home / 724,129.20-1,085,999.40-303,447.60

Finding the Fourth Proportional to 724,129.20, 1,085,999.40 and 303,447.60

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Solution

The fourth proportional to 724,129.20, 1,085,999.40 and 303,447.60 is: 455,089.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,129.20 : 1,085,999.40 = 303,447.60 : x
  2. Step 2: Convert to fraction form
    724,129.20/1,085,999.40 = 303,447.60/x
  3. Step 3: Cross multiply
    724,129.20x = 1,085,999.40 × 303,447.60
  4. Step 4: Simplify right side
    724,129.20x = 329,543,911,531.44
  5. Step 5: Solve for x
    x = 329,543,911,531.44/724,129.20
  6. Step 6: Final answer
    x = 455,089.94

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1.5x scale

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.