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Finding the Fourth Proportional to 501,490.75, 692,069.39 and 275,136.25

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Solution

The fourth proportional to 501,490.75, 692,069.39 and 275,136.25 is: 379,694.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,490.75 : 692,069.39 = 275,136.25 : x
  2. Step 2: Convert to fraction form
    501,490.75/692,069.39 = 275,136.25/x
  3. Step 3: Cross multiply
    501,490.75x = 692,069.39 × 275,136.25
  4. Step 4: Simplify right side
    501,490.75x = 190,413,376,704.39
  5. Step 5: Solve for x
    x = 190,413,376,704.39/501,490.75
  6. Step 6: Final answer
    x = 379,694.69

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Double scale
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Similar ratio
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1.5x scale

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.