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Finding the Fourth Proportional to 444,666.40, 666,999.60 and 381,680.80

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Solution

The fourth proportional to 444,666.40, 666,999.60 and 381,680.80 is: 572,521.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,666.40 : 666,999.60 = 381,680.80 : x
  2. Step 2: Convert to fraction form
    444,666.40/666,999.60 = 381,680.80/x
  3. Step 3: Cross multiply
    444,666.40x = 666,999.60 × 381,680.80
  4. Step 4: Simplify right side
    444,666.40x = 254,580,940,927.68
  5. Step 5: Solve for x
    x = 254,580,940,927.68/444,666.40
  6. Step 6: Final answer
    x = 572,521.20

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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.