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Finding the Fourth Proportional to 978,795.64, 1,350,800.04 and 549,103.60

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Solution

The fourth proportional to 978,795.64, 1,350,800.04 and 549,103.60 is: 757,797.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,795.64 : 1,350,800.04 = 549,103.60 : x
  2. Step 2: Convert to fraction form
    978,795.64/1,350,800.04 = 549,103.60/x
  3. Step 3: Cross multiply
    978,795.64x = 1,350,800.04 × 549,103.60
  4. Step 4: Simplify right side
    978,795.64x = 741,729,164,844.14
  5. Step 5: Solve for x
    x = 741,729,164,844.14/978,795.64
  6. Step 6: Final answer
    x = 757,797.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.