Home / 1,091,389.26-1,637,072.37-426,535.50

Finding the Fourth Proportional to 1,091,389.26, 1,637,072.37 and 426,535.50

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Solution

The fourth proportional to 1,091,389.26, 1,637,072.37 and 426,535.50 is: 639,798.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091,389.26 : 1,637,072.37 = 426,535.50 : x
  2. Step 2: Convert to fraction form
    1,091,389.26/1,637,072.37 = 426,535.50/x
  3. Step 3: Cross multiply
    1,091,389.26x = 1,637,072.37 × 426,535.50
  4. Step 4: Simplify right side
    1,091,389.26x = 698,269,481,874.14
  5. Step 5: Solve for x
    x = 698,269,481,874.14/1,091,389.26
  6. Step 6: Final answer
    x = 639,798.75

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Double scale
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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.