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Finding the Fourth Proportional to 638,640.40, 957,960.60 and 566,755.60

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Solution

The fourth proportional to 638,640.40, 957,960.60 and 566,755.60 is: 850,133.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,640.40 : 957,960.60 = 566,755.60 : x
  2. Step 2: Convert to fraction form
    638,640.40/957,960.60 = 566,755.60/x
  3. Step 3: Cross multiply
    638,640.40x = 957,960.60 × 566,755.60
  4. Step 4: Simplify right side
    638,640.40x = 542,929,534,629.36
  5. Step 5: Solve for x
    x = 542,929,534,629.36/638,640.40
  6. Step 6: Final answer
    x = 850,133.40

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1.5x scale

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.