Home / 1,269,837.79-1,904,640.04-428,396.83

Finding the Fourth Proportional to 1,269,837.79, 1,904,640.04 and 428,396.83

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Solution

The fourth proportional to 1,269,837.79, 1,904,640.04 and 428,396.83 is: 642,555.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269,837.79 : 1,904,640.04 = 428,396.83 : x
  2. Step 2: Convert to fraction form
    1,269,837.79/1,904,640.04 = 428,396.83/x
  3. Step 3: Cross multiply
    1,269,837.79x = 1,904,640.04 × 428,396.83
  4. Step 4: Simplify right side
    1,269,837.79x = 815,941,755,427.07
  5. Step 5: Solve for x
    x = 815,941,755,427.07/1,269,837.79
  6. Step 6: Final answer
    x = 642,555.89

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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.