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Finding the Fourth Proportional to 978,663.60, 1,465,230.60 and 951,015.60

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Solution

The fourth proportional to 978,663.60, 1,465,230.60 and 951,015.60 is: 1,423,836.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,663.60 : 1,465,230.60 = 951,015.60 : x
  2. Step 2: Convert to fraction form
    978,663.60/1,465,230.60 = 951,015.60/x
  3. Step 3: Cross multiply
    978,663.60x = 1,465,230.60 × 951,015.60
  4. Step 4: Simplify right side
    978,663.60x = 1,393,457,158,197.36
  5. Step 5: Solve for x
    x = 1,393,457,158,197.36/978,663.60
  6. Step 6: Final answer
    x = 1,423,836.71

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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.