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Finding the Fourth Proportional to 722,984.60, 997,718.82 and 400,715.48

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Solution

The fourth proportional to 722,984.60, 997,718.82 and 400,715.48 is: 552,987.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,984.60 : 997,718.82 = 400,715.48 : x
  2. Step 2: Convert to fraction form
    722,984.60/997,718.82 = 400,715.48/x
  3. Step 3: Cross multiply
    722,984.60x = 997,718.82 × 400,715.48
  4. Step 4: Simplify right side
    722,984.60x = 399,801,375,861.33
  5. Step 5: Solve for x
    x = 399,801,375,861.33/722,984.60
  6. Step 6: Final answer
    x = 552,987.40

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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.