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Finding the Fourth Proportional to 884,611.78, 1,220,757.86 and 502,638.56

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Solution

The fourth proportional to 884,611.78, 1,220,757.86 and 502,638.56 is: 693,637.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    884,611.78 : 1,220,757.86 = 502,638.56 : x
  2. Step 2: Convert to fraction form
    884,611.78/1,220,757.86 = 502,638.56/x
  3. Step 3: Cross multiply
    884,611.78x = 1,220,757.86 × 502,638.56
  4. Step 4: Simplify right side
    884,611.78x = 613,599,972,859.08
  5. Step 5: Solve for x
    x = 613,599,972,859.08/884,611.78
  6. Step 6: Final answer
    x = 693,637.58

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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.