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Finding the Fourth Proportional to 464,636.79, 641,576.90 and 378,608.72

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Solution

The fourth proportional to 464,636.79, 641,576.90 and 378,608.72 is: 522,788.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,636.79 : 641,576.90 = 378,608.72 : x
  2. Step 2: Convert to fraction form
    464,636.79/641,576.90 = 378,608.72/x
  3. Step 3: Cross multiply
    464,636.79x = 641,576.90 × 378,608.72
  4. Step 4: Simplify right side
    464,636.79x = 242,906,606,629.21
  5. Step 5: Solve for x
    x = 242,906,606,629.21/464,636.79
  6. Step 6: Final answer
    x = 522,788.15

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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.