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Finding the Fourth Proportional to 978,266.70, 1,467,400.05 and 268,293.60

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Solution

The fourth proportional to 978,266.70, 1,467,400.05 and 268,293.60 is: 402,440.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,266.70 : 1,467,400.05 = 268,293.60 : x
  2. Step 2: Convert to fraction form
    978,266.70/1,467,400.05 = 268,293.60/x
  3. Step 3: Cross multiply
    978,266.70x = 1,467,400.05 × 268,293.60
  4. Step 4: Simplify right side
    978,266.70x = 393,694,042,054.68
  5. Step 5: Solve for x
    x = 393,694,042,054.68/978,266.70
  6. Step 6: Final answer
    x = 402,440.40

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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.