Home / 762,709.70-1,143,348.24-256,916.72

Finding the Fourth Proportional to 762,709.70, 1,143,348.24 and 256,916.72

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Solution

The fourth proportional to 762,709.70, 1,143,348.24 and 256,916.72 is: 385,133.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,709.70 : 1,143,348.24 = 256,916.72 : x
  2. Step 2: Convert to fraction form
    762,709.70/1,143,348.24 = 256,916.72/x
  3. Step 3: Cross multiply
    762,709.70x = 1,143,348.24 × 256,916.72
  4. Step 4: Simplify right side
    762,709.70x = 293,745,279,638.57
  5. Step 5: Solve for x
    x = 293,745,279,638.57/762,709.70
  6. Step 6: Final answer
    x = 385,133.79

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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.