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Finding the Fourth Proportional to 488,267.80, 731,235.30 and 394,955.80

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Solution

The fourth proportional to 488,267.80, 731,235.30 and 394,955.80 is: 591,490.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,267.80 : 731,235.30 = 394,955.80 : x
  2. Step 2: Convert to fraction form
    488,267.80/731,235.30 = 394,955.80/x
  3. Step 3: Cross multiply
    488,267.80x = 731,235.30 × 394,955.80
  4. Step 4: Simplify right side
    488,267.80x = 288,805,622,899.74
  5. Step 5: Solve for x
    x = 288,805,622,899.74/488,267.80
  6. Step 6: Final answer
    x = 591,490.21

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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.