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Finding the Fourth Proportional to 722,805.76, 997,638.40 and 481,097.92

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Solution

The fourth proportional to 722,805.76, 997,638.40 and 481,097.92 is: 664,025.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,805.76 : 997,638.40 = 481,097.92 : x
  2. Step 2: Convert to fraction form
    722,805.76/997,638.40 = 481,097.92/x
  3. Step 3: Cross multiply
    722,805.76x = 997,638.40 × 481,097.92
  4. Step 4: Simplify right side
    722,805.76x = 479,961,759,152.13
  5. Step 5: Solve for x
    x = 479,961,759,152.13/722,805.76
  6. Step 6: Final answer
    x = 664,025.92

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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.