Home / 479,549.40-661,736.25-307,163.22

Finding the Fourth Proportional to 479,549.40, 661,736.25 and 307,163.22

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Solution

The fourth proportional to 479,549.40, 661,736.25 and 307,163.22 is: 423,858.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,549.40 : 661,736.25 = 307,163.22 : x
  2. Step 2: Convert to fraction form
    479,549.40/661,736.25 = 307,163.22/x
  3. Step 3: Cross multiply
    479,549.40x = 661,736.25 × 307,163.22
  4. Step 4: Simplify right side
    479,549.40x = 203,261,038,581.48
  5. Step 5: Solve for x
    x = 203,261,038,581.48/479,549.40
  6. Step 6: Final answer
    x = 423,858.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.