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Finding the Fourth Proportional to 571,497.55, 855,564.67 and 381,486.62

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Solution

The fourth proportional to 571,497.55, 855,564.67 and 381,486.62 is: 571,107.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,497.55 : 855,564.67 = 381,486.62 : x
  2. Step 2: Convert to fraction form
    571,497.55/855,564.67 = 381,486.62/x
  3. Step 3: Cross multiply
    571,497.55x = 855,564.67 × 381,486.62
  4. Step 4: Simplify right side
    571,497.55x = 326,386,474,149.72
  5. Step 5: Solve for x
    x = 326,386,474,149.72/571,497.55
  6. Step 6: Final answer
    x = 571,107.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.