Home / 811,455.52-1,217,211-278,971.96

Finding the Fourth Proportional to 811,455.52, 1,217,211 and 278,971.96

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Solution

The fourth proportional to 811,455.52, 1,217,211 and 278,971.96 is: 418,467.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,455.52 : 1,217,211 = 278,971.96 : x
  2. Step 2: Convert to fraction form
    811,455.52/1,217,211 = 278,971.96/x
  3. Step 3: Cross multiply
    811,455.52x = 1,217,211 × 278,971.96
  4. Step 4: Simplify right side
    811,455.52x = 339,567,738,403.56
  5. Step 5: Solve for x
    x = 339,567,738,403.56/811,455.52
  6. Step 6: Final answer
    x = 418,467.47

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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.