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Finding the Fourth Proportional to 625,743.81, 863,502.46 and 353,817.39

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Solution

The fourth proportional to 625,743.81, 863,502.46 and 353,817.39 is: 488,254.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,743.81 : 863,502.46 = 353,817.39 : x
  2. Step 2: Convert to fraction form
    625,743.81/863,502.46 = 353,817.39/x
  3. Step 3: Cross multiply
    625,743.81x = 863,502.46 × 353,817.39
  4. Step 4: Simplify right side
    625,743.81x = 305,522,186,655.78
  5. Step 5: Solve for x
    x = 305,522,186,655.78/625,743.81
  6. Step 6: Final answer
    x = 488,254.43

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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.