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Finding the Fourth Proportional to 978,269.80, 1,467,404.70 and 268,369.60

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Solution

The fourth proportional to 978,269.80, 1,467,404.70 and 268,369.60 is: 402,554.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,269.80 : 1,467,404.70 = 268,369.60 : x
  2. Step 2: Convert to fraction form
    978,269.80/1,467,404.70 = 268,369.60/x
  3. Step 3: Cross multiply
    978,269.80x = 1,467,404.70 × 268,369.60
  4. Step 4: Simplify right side
    978,269.80x = 393,806,812,377.12
  5. Step 5: Solve for x
    x = 393,806,812,377.12/978,269.80
  6. Step 6: Final answer
    x = 402,554.40

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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.