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Finding the Fourth Proportional to 660,296.80, 911,664.48 and 488,252.80

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Solution

The fourth proportional to 660,296.80, 911,664.48 and 488,252.80 is: 674,125.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,296.80 : 911,664.48 = 488,252.80 : x
  2. Step 2: Convert to fraction form
    660,296.80/911,664.48 = 488,252.80/x
  3. Step 3: Cross multiply
    660,296.80x = 911,664.48 × 488,252.80
  4. Step 4: Simplify right side
    660,296.80x = 445,122,735,020.54
  5. Step 5: Solve for x
    x = 445,122,735,020.54/660,296.80
  6. Step 6: Final answer
    x = 674,125.23

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1.5x scale

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.