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Finding the Fourth Proportional to 1,328,627.60, 1,992,941.40 and 654,837.20

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Solution

The fourth proportional to 1,328,627.60, 1,992,941.40 and 654,837.20 is: 982,255.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,627.60 : 1,992,941.40 = 654,837.20 : x
  2. Step 2: Convert to fraction form
    1,328,627.60/1,992,941.40 = 654,837.20/x
  3. Step 3: Cross multiply
    1,328,627.60x = 1,992,941.40 × 654,837.20
  4. Step 4: Simplify right side
    1,328,627.60x = 1,305,052,166,140.08
  5. Step 5: Solve for x
    x = 1,305,052,166,140.08/1,328,627.60
  6. Step 6: Final answer
    x = 982,255.80

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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.