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Finding the Fourth Proportional to 768,183.72, 1,060,094.70 and 428,644.68

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Solution

The fourth proportional to 768,183.72, 1,060,094.70 and 428,644.68 is: 591,530.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,183.72 : 1,060,094.70 = 428,644.68 : x
  2. Step 2: Convert to fraction form
    768,183.72/1,060,094.70 = 428,644.68/x
  3. Step 3: Cross multiply
    768,183.72x = 1,060,094.70 × 428,644.68
  4. Step 4: Simplify right side
    768,183.72x = 454,403,953,451.20
  5. Step 5: Solve for x
    x = 454,403,953,451.20/768,183.72
  6. Step 6: Final answer
    x = 591,530.31

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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.