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Finding the Fourth Proportional to 823,136.52, 1,240,874.01 and 768,270

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Solution

The fourth proportional to 823,136.52, 1,240,874.01 and 768,270 is: 1,158,163.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,136.52 : 1,240,874.01 = 768,270 : x
  2. Step 2: Convert to fraction form
    823,136.52/1,240,874.01 = 768,270/x
  3. Step 3: Cross multiply
    823,136.52x = 1,240,874.01 × 768,270
  4. Step 4: Simplify right side
    823,136.52x = 953,326,275,662.70
  5. Step 5: Solve for x
    x = 953,326,275,662.70/823,136.52
  6. Step 6: Final answer
    x = 1,158,163.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.