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Finding the Fourth Proportional to 579,801.75, 800,213.90 and 353,578.47

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Solution

The fourth proportional to 579,801.75, 800,213.90 and 353,578.47 is: 487,991.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,801.75 : 800,213.90 = 353,578.47 : x
  2. Step 2: Convert to fraction form
    579,801.75/800,213.90 = 353,578.47/x
  3. Step 3: Cross multiply
    579,801.75x = 800,213.90 × 353,578.47
  4. Step 4: Simplify right side
    579,801.75x = 282,938,404,666.84
  5. Step 5: Solve for x
    x = 282,938,404,666.84/579,801.75
  6. Step 6: Final answer
    x = 487,991.64

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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.