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Finding the Fourth Proportional to 978,423.16, 1,467,477.30 and 268,286.44

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Solution

The fourth proportional to 978,423.16, 1,467,477.30 and 268,286.44 is: 402,386.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,423.16 : 1,467,477.30 = 268,286.44 : x
  2. Step 2: Convert to fraction form
    978,423.16/1,467,477.30 = 268,286.44/x
  3. Step 3: Cross multiply
    978,423.16x = 1,467,477.30 × 268,286.44
  4. Step 4: Simplify right side
    978,423.16x = 393,704,260,597.81
  5. Step 5: Solve for x
    x = 393,704,260,597.81/978,423.16
  6. Step 6: Final answer
    x = 402,386.49

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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.