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Finding the Fourth Proportional to 488,704.61, 674,012.51 and 343,989.45

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Solution

The fourth proportional to 488,704.61, 674,012.51 and 343,989.45 is: 474,424.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,704.61 : 674,012.51 = 343,989.45 : x
  2. Step 2: Convert to fraction form
    488,704.61/674,012.51 = 343,989.45/x
  3. Step 3: Cross multiply
    488,704.61x = 674,012.51 × 343,989.45
  4. Step 4: Simplify right side
    488,704.61x = 231,853,192,608.02
  5. Step 5: Solve for x
    x = 231,853,192,608.02/488,704.61
  6. Step 6: Final answer
    x = 474,424.00

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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.