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Finding the Fourth Proportional to 791,889.72, 1,092,794.40 and 447,720

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Solution

The fourth proportional to 791,889.72, 1,092,794.40 and 447,720 is: 617,846.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,889.72 : 1,092,794.40 = 447,720 : x
  2. Step 2: Convert to fraction form
    791,889.72/1,092,794.40 = 447,720/x
  3. Step 3: Cross multiply
    791,889.72x = 1,092,794.40 × 447,720
  4. Step 4: Simplify right side
    791,889.72x = 489,265,908,768.00
  5. Step 5: Solve for x
    x = 489,265,908,768.00/791,889.72
  6. Step 6: Final answer
    x = 617,846.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.