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Finding the Fourth Proportional to 702,285.97, 969,147.72 and 379,989

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Solution

The fourth proportional to 702,285.97, 969,147.72 and 379,989 is: 524,381.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,285.97 : 969,147.72 = 379,989 : x
  2. Step 2: Convert to fraction form
    702,285.97/969,147.72 = 379,989/x
  3. Step 3: Cross multiply
    702,285.97x = 969,147.72 × 379,989
  4. Step 4: Simplify right side
    702,285.97x = 368,265,472,975.08
  5. Step 5: Solve for x
    x = 368,265,472,975.08/702,285.97
  6. Step 6: Final answer
    x = 524,381.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.