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Finding the Fourth Proportional to 722,589.89, 997,160.71 and 400,292.92

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Solution

The fourth proportional to 722,589.89, 997,160.71 and 400,292.92 is: 552,396.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,589.89 : 997,160.71 = 400,292.92 : x
  2. Step 2: Convert to fraction form
    722,589.89/997,160.71 = 400,292.92/x
  3. Step 3: Cross multiply
    722,589.89x = 997,160.71 × 400,292.92
  4. Step 4: Simplify right side
    722,589.89x = 399,156,365,327.91
  5. Step 5: Solve for x
    x = 399,156,365,327.91/722,589.89
  6. Step 6: Final answer
    x = 552,396.83

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1.5x scale

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.