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Finding the Fourth Proportional to 702,696.46, 969,721.42 and 380,406.55

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Solution

The fourth proportional to 702,696.46, 969,721.42 and 380,406.55 is: 524,961.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,696.46 : 969,721.42 = 380,406.55 : x
  2. Step 2: Convert to fraction form
    702,696.46/969,721.42 = 380,406.55/x
  3. Step 3: Cross multiply
    702,696.46x = 969,721.42 × 380,406.55
  4. Step 4: Simplify right side
    702,696.46x = 368,888,379,843.30
  5. Step 5: Solve for x
    x = 368,888,379,843.30/702,696.46
  6. Step 6: Final answer
    x = 524,961.20

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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.