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Finding the Fourth Proportional to 945,881.60, 1,419,513.60 and 665,945.60

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Solution

The fourth proportional to 945,881.60, 1,419,513.60 and 665,945.60 is: 999,405.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,881.60 : 1,419,513.60 = 665,945.60 : x
  2. Step 2: Convert to fraction form
    945,881.60/1,419,513.60 = 665,945.60/x
  3. Step 3: Cross multiply
    945,881.60x = 1,419,513.60 × 665,945.60
  4. Step 4: Simplify right side
    945,881.60x = 945,318,836,060.16
  5. Step 5: Solve for x
    x = 945,318,836,060.16/945,881.60
  6. Step 6: Final answer
    x = 999,405.04

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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.