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Finding the Fourth Proportional to 621,636.33, 857,856.87 and 349,704.42

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Solution

The fourth proportional to 621,636.33, 857,856.87 and 349,704.42 is: 482,591.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,636.33 : 857,856.87 = 349,704.42 : x
  2. Step 2: Convert to fraction form
    621,636.33/857,856.87 = 349,704.42/x
  3. Step 3: Cross multiply
    621,636.33x = 857,856.87 × 349,704.42
  4. Step 4: Simplify right side
    621,636.33x = 299,996,339,166.37
  5. Step 5: Solve for x
    x = 299,996,339,166.37/621,636.33
  6. Step 6: Final answer
    x = 482,591.39

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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.