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Finding the Fourth Proportional to 802,606.78, 1,107,710.94 and 496,781.56

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Solution

The fourth proportional to 802,606.78, 1,107,710.94 and 496,781.56 is: 685,628.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,606.78 : 1,107,710.94 = 496,781.56 : x
  2. Step 2: Convert to fraction form
    802,606.78/1,107,710.94 = 496,781.56/x
  3. Step 3: Cross multiply
    802,606.78x = 1,107,710.94 × 496,781.56
  4. Step 4: Simplify right side
    802,606.78x = 550,290,368,802.27
  5. Step 5: Solve for x
    x = 550,290,368,802.27/802,606.78
  6. Step 6: Final answer
    x = 685,628.86

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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.