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Finding the Fourth Proportional to 444,003.20, 666,004.80 and 128,470.40

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Solution

The fourth proportional to 444,003.20, 666,004.80 and 128,470.40 is: 192,705.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,003.20 : 666,004.80 = 128,470.40 : x
  2. Step 2: Convert to fraction form
    444,003.20/666,004.80 = 128,470.40/x
  3. Step 3: Cross multiply
    444,003.20x = 666,004.80 × 128,470.40
  4. Step 4: Simplify right side
    444,003.20x = 85,561,903,057.92
  5. Step 5: Solve for x
    x = 85,561,903,057.92/444,003.20
  6. Step 6: Final answer
    x = 192,705.60

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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.