Home / 345,736.40-518,604.60-324,741.20

Finding the Fourth Proportional to 345,736.40, 518,604.60 and 324,741.20

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Solution

The fourth proportional to 345,736.40, 518,604.60 and 324,741.20 is: 487,111.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,736.40 : 518,604.60 = 324,741.20 : x
  2. Step 2: Convert to fraction form
    345,736.40/518,604.60 = 324,741.20/x
  3. Step 3: Cross multiply
    345,736.40x = 518,604.60 × 324,741.20
  4. Step 4: Simplify right side
    345,736.40x = 168,412,280,129.52
  5. Step 5: Solve for x
    x = 168,412,280,129.52/345,736.40
  6. Step 6: Final answer
    x = 487,111.80

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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.