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Finding the Fourth Proportional to 1,260,896.22, 1,890,204.66 and 856,223.46

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Solution

The fourth proportional to 1,260,896.22, 1,890,204.66 and 856,223.46 is: 1,283,561.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,896.22 : 1,890,204.66 = 856,223.46 : x
  2. Step 2: Convert to fraction form
    1,260,896.22/1,890,204.66 = 856,223.46/x
  3. Step 3: Cross multiply
    1,260,896.22x = 1,890,204.66 × 856,223.46
  4. Step 4: Simplify right side
    1,260,896.22x = 1,618,437,574,093.32
  5. Step 5: Solve for x
    x = 1,618,437,574,093.32/1,260,896.22
  6. Step 6: Final answer
    x = 1,283,561.29

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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.