Home / 1,091,720.20-1,638,809.10-843,502.60

Finding the Fourth Proportional to 1,091,720.20, 1,638,809.10 and 843,502.60

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Solution

The fourth proportional to 1,091,720.20, 1,638,809.10 and 843,502.60 is: 1,266,203.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091,720.20 : 1,638,809.10 = 843,502.60 : x
  2. Step 2: Convert to fraction form
    1,091,720.20/1,638,809.10 = 843,502.60/x
  3. Step 3: Cross multiply
    1,091,720.20x = 1,638,809.10 × 843,502.60
  4. Step 4: Simplify right side
    1,091,720.20x = 1,382,339,736,753.66
  5. Step 5: Solve for x
    x = 1,382,339,736,753.66/1,091,720.20
  6. Step 6: Final answer
    x = 1,266,203.32

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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.