Home / 826,398.72-1,240,262.42-427,156.47

Finding the Fourth Proportional to 826,398.72, 1,240,262.42 and 427,156.47

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Solution

The fourth proportional to 826,398.72, 1,240,262.42 and 427,156.47 is: 641,078.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,398.72 : 1,240,262.42 = 427,156.47 : x
  2. Step 2: Convert to fraction form
    826,398.72/1,240,262.42 = 427,156.47/x
  3. Step 3: Cross multiply
    826,398.72x = 1,240,262.42 × 427,156.47
  4. Step 4: Simplify right side
    826,398.72x = 529,786,115,065.08
  5. Step 5: Solve for x
    x = 529,786,115,065.08/826,398.72
  6. Step 6: Final answer
    x = 641,078.09

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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.