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Finding the Fourth Proportional to 722,877.72, 997,573.59 and 400,593.12

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Solution

The fourth proportional to 722,877.72, 997,573.59 and 400,593.12 is: 552,819.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,877.72 : 997,573.59 = 400,593.12 : x
  2. Step 2: Convert to fraction form
    722,877.72/997,573.59 = 400,593.12/x
  3. Step 3: Cross multiply
    722,877.72x = 997,573.59 × 400,593.12
  4. Step 4: Simplify right side
    722,877.72x = 399,621,116,847.70
  5. Step 5: Solve for x
    x = 399,621,116,847.70/722,877.72
  6. Step 6: Final answer
    x = 552,819.80

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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.