Home / 855,853.31-1,283,905.10-256,861.80

Finding the Fourth Proportional to 855,853.31, 1,283,905.10 and 256,861.80

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Solution

The fourth proportional to 855,853.31, 1,283,905.10 and 256,861.80 is: 385,330.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,853.31 : 1,283,905.10 = 256,861.80 : x
  2. Step 2: Convert to fraction form
    855,853.31/1,283,905.10 = 256,861.80/x
  3. Step 3: Cross multiply
    855,853.31x = 1,283,905.10 × 256,861.80
  4. Step 4: Simplify right side
    855,853.31x = 329,786,173,730.87
  5. Step 5: Solve for x
    x = 329,786,173,730.87/855,853.31
  6. Step 6: Final answer
    x = 385,330.26

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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.