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Finding the Fourth Proportional to 978,053.64, 1,466,955.72 and 378,604.68

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Solution

The fourth proportional to 978,053.64, 1,466,955.72 and 378,604.68 is: 567,858.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,053.64 : 1,466,955.72 = 378,604.68 : x
  2. Step 2: Convert to fraction form
    978,053.64/1,466,955.72 = 378,604.68/x
  3. Step 3: Cross multiply
    978,053.64x = 1,466,955.72 × 378,604.68
  4. Step 4: Simplify right side
    978,053.64x = 555,396,300,944.77
  5. Step 5: Solve for x
    x = 555,396,300,944.77/978,053.64
  6. Step 6: Final answer
    x = 567,858.73

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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.