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Finding the Fourth Proportional to 625,807.72, 863,631.64 and 353,916.27

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Solution

The fourth proportional to 625,807.72, 863,631.64 and 353,916.27 is: 488,414.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,807.72 : 863,631.64 = 353,916.27 : x
  2. Step 2: Convert to fraction form
    625,807.72/863,631.64 = 353,916.27/x
  3. Step 3: Cross multiply
    625,807.72x = 863,631.64 × 353,916.27
  4. Step 4: Simplify right side
    625,807.72x = 305,653,288,682.78
  5. Step 5: Solve for x
    x = 305,653,288,682.78/625,807.72
  6. Step 6: Final answer
    x = 488,414.06

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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.