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Finding the Fourth Proportional to 978,387.60, 1,467,424.08 and 268,250.88

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Solution

The fourth proportional to 978,387.60, 1,467,424.08 and 268,250.88 is: 402,333.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,387.60 : 1,467,424.08 = 268,250.88 : x
  2. Step 2: Convert to fraction form
    978,387.60/1,467,424.08 = 268,250.88/x
  3. Step 3: Cross multiply
    978,387.60x = 1,467,424.08 × 268,250.88
  4. Step 4: Simplify right side
    978,387.60x = 393,637,800,793.19
  5. Step 5: Solve for x
    x = 393,637,800,793.19/978,387.60
  6. Step 6: Final answer
    x = 402,333.19

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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.