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Finding the Fourth Proportional to 645,593.40, 891,027.66 and 373,668.60

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Solution

The fourth proportional to 645,593.40, 891,027.66 and 373,668.60 is: 515,725.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,593.40 : 891,027.66 = 373,668.60 : x
  2. Step 2: Convert to fraction form
    645,593.40/891,027.66 = 373,668.60/x
  3. Step 3: Cross multiply
    645,593.40x = 891,027.66 × 373,668.60
  4. Step 4: Simplify right side
    645,593.40x = 332,949,058,273.48
  5. Step 5: Solve for x
    x = 332,949,058,273.48/645,593.40
  6. Step 6: Final answer
    x = 515,725.62

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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.