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Finding the Fourth Proportional to 978,771.40, 1,468,154.35 and 268,800.10

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Solution

The fourth proportional to 978,771.40, 1,468,154.35 and 268,800.10 is: 403,199.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,771.40 : 1,468,154.35 = 268,800.10 : x
  2. Step 2: Convert to fraction form
    978,771.40/1,468,154.35 = 268,800.10/x
  3. Step 3: Cross multiply
    978,771.40x = 1,468,154.35 × 268,800.10
  4. Step 4: Simplify right side
    978,771.40x = 394,640,036,095.44
  5. Step 5: Solve for x
    x = 394,640,036,095.44/978,771.40
  6. Step 6: Final answer
    x = 403,199.39

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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.