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Finding the Fourth Proportional to 445,791, 668,794.54 and 256,372.60

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Solution

The fourth proportional to 445,791, 668,794.54 and 256,372.60 is: 384,621.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,791 : 668,794.54 = 256,372.60 : x
  2. Step 2: Convert to fraction form
    445,791/668,794.54 = 256,372.60/x
  3. Step 3: Cross multiply
    445,791x = 668,794.54 × 256,372.60
  4. Step 4: Simplify right side
    445,791x = 171,460,595,085.60
  5. Step 5: Solve for x
    x = 171,460,595,085.60/445,791
  6. Step 6: Final answer
    x = 384,621.03

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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.