Home / 823,442.40-1,235,221.20-324,741.60

Finding the Fourth Proportional to 823,442.40, 1,235,221.20 and 324,741.60

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Solution

The fourth proportional to 823,442.40, 1,235,221.20 and 324,741.60 is: 487,135.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,442.40 : 1,235,221.20 = 324,741.60 : x
  2. Step 2: Convert to fraction form
    823,442.40/1,235,221.20 = 324,741.60/x
  3. Step 3: Cross multiply
    823,442.40x = 1,235,221.20 × 324,741.60
  4. Step 4: Simplify right side
    823,442.40x = 401,127,708,841.92
  5. Step 5: Solve for x
    x = 401,127,708,841.92/823,442.40
  6. Step 6: Final answer
    x = 487,135.12

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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.