Home / 866,044.69-1,299,139.72-319,086

Finding the Fourth Proportional to 866,044.69, 1,299,139.72 and 319,086

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Solution

The fourth proportional to 866,044.69, 1,299,139.72 and 319,086 is: 478,655.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,044.69 : 1,299,139.72 = 319,086 : x
  2. Step 2: Convert to fraction form
    866,044.69/1,299,139.72 = 319,086/x
  3. Step 3: Cross multiply
    866,044.69x = 1,299,139.72 × 319,086
  4. Step 4: Simplify right side
    866,044.69x = 414,537,295,898.21
  5. Step 5: Solve for x
    x = 414,537,295,898.21/866,044.69
  6. Step 6: Final answer
    x = 478,655.78

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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.