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Finding the Fourth Proportional to 407,637.20, 611,542.20 and 123,304.40

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Solution

The fourth proportional to 407,637.20, 611,542.20 and 123,304.40 is: 184,982.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,637.20 : 611,542.20 = 123,304.40 : x
  2. Step 2: Convert to fraction form
    407,637.20/611,542.20 = 123,304.40/x
  3. Step 3: Cross multiply
    407,637.20x = 611,542.20 × 123,304.40
  4. Step 4: Simplify right side
    407,637.20x = 75,405,844,045.68
  5. Step 5: Solve for x
    x = 75,405,844,045.68/407,637.20
  6. Step 6: Final answer
    x = 184,982.73

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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.