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Finding the Fourth Proportional to 978,281.70, 1,467,422.55 and 268,308.60

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Solution

The fourth proportional to 978,281.70, 1,467,422.55 and 268,308.60 is: 402,462.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,281.70 : 1,467,422.55 = 268,308.60 : x
  2. Step 2: Convert to fraction form
    978,281.70/1,467,422.55 = 268,308.60/x
  3. Step 3: Cross multiply
    978,281.70x = 1,467,422.55 × 268,308.60
  4. Step 4: Simplify right side
    978,281.70x = 393,722,089,998.93
  5. Step 5: Solve for x
    x = 393,722,089,998.93/978,281.70
  6. Step 6: Final answer
    x = 402,462.90

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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.