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Finding the Fourth Proportional to 762,324.72, 1,143,534.72 and 256,843.68

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Solution

The fourth proportional to 762,324.72, 1,143,534.72 and 256,843.68 is: 385,281.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,324.72 : 1,143,534.72 = 256,843.68 : x
  2. Step 2: Convert to fraction form
    762,324.72/1,143,534.72 = 256,843.68/x
  3. Step 3: Cross multiply
    762,324.72x = 1,143,534.72 × 256,843.68
  4. Step 4: Simplify right side
    762,324.72x = 293,709,665,692.57
  5. Step 5: Solve for x
    x = 293,709,665,692.57/762,324.72
  6. Step 6: Final answer
    x = 385,281.57

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1.5x scale

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.