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Finding the Fourth Proportional to 386,450.40, 541,399.20 and 386,450.40

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Solution

The fourth proportional to 386,450.40, 541,399.20 and 386,450.40 is: 541,399.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,450.40 : 541,399.20 = 386,450.40 : x
  2. Step 2: Convert to fraction form
    386,450.40/541,399.20 = 386,450.40/x
  3. Step 3: Cross multiply
    386,450.40x = 541,399.20 × 386,450.40
  4. Step 4: Simplify right side
    386,450.40x = 209,223,937,399.68
  5. Step 5: Solve for x
    x = 209,223,937,399.68/386,450.40
  6. Step 6: Final answer
    x = 541,399.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.