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Finding the Fourth Proportional to 488,047.80, 730,905.30 and 394,735.80

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Solution

The fourth proportional to 488,047.80, 730,905.30 and 394,735.80 is: 591,160.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,047.80 : 730,905.30 = 394,735.80 : x
  2. Step 2: Convert to fraction form
    488,047.80/730,905.30 = 394,735.80/x
  3. Step 3: Cross multiply
    488,047.80x = 730,905.30 × 394,735.80
  4. Step 4: Simplify right side
    488,047.80x = 288,514,488,319.74
  5. Step 5: Solve for x
    x = 288,514,488,319.74/488,047.80
  6. Step 6: Final answer
    x = 591,160.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.