Home / 1,638,864.40-2,458,642.20-691,747.60

Finding the Fourth Proportional to 1,638,864.40, 2,458,642.20 and 691,747.60

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Solution

The fourth proportional to 1,638,864.40, 2,458,642.20 and 691,747.60 is: 1,037,767.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,864.40 : 2,458,642.20 = 691,747.60 : x
  2. Step 2: Convert to fraction form
    1,638,864.40/2,458,642.20 = 691,747.60/x
  3. Step 3: Cross multiply
    1,638,864.40x = 2,458,642.20 × 691,747.60
  4. Step 4: Simplify right side
    1,638,864.40x = 1,700,759,841,108.72
  5. Step 5: Solve for x
    x = 1,700,759,841,108.72/1,638,864.40
  6. Step 6: Final answer
    x = 1,037,767.27

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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.