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Finding the Fourth Proportional to 999,992.92, 1,380,169.56 and 564,542.68

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Solution

The fourth proportional to 999,992.92, 1,380,169.56 and 564,542.68 is: 779,170.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,992.92 : 1,380,169.56 = 564,542.68 : x
  2. Step 2: Convert to fraction form
    999,992.92/1,380,169.56 = 564,542.68/x
  3. Step 3: Cross multiply
    999,992.92x = 1,380,169.56 × 564,542.68
  4. Step 4: Simplify right side
    999,992.92x = 779,164,622,256.82
  5. Step 5: Solve for x
    x = 779,164,622,256.82/999,992.92
  6. Step 6: Final answer
    x = 779,170.14

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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.