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Finding the Fourth Proportional to 521,662.80, 784,243.80 and 444,680.40

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Solution

The fourth proportional to 521,662.80, 784,243.80 and 444,680.40 is: 668,512.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,662.80 : 784,243.80 = 444,680.40 : x
  2. Step 2: Convert to fraction form
    521,662.80/784,243.80 = 444,680.40/x
  3. Step 3: Cross multiply
    521,662.80x = 784,243.80 × 444,680.40
  4. Step 4: Simplify right side
    521,662.80x = 348,737,846,681.52
  5. Step 5: Solve for x
    x = 348,737,846,681.52/521,662.80
  6. Step 6: Final answer
    x = 668,512.01

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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.