Home / 1,912,130.25-2,638,930.39-1,427,854.64

Finding the Fourth Proportional to 1,912,130.25, 2,638,930.39 and 1,427,854.64

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Solution

The fourth proportional to 1,912,130.25, 2,638,930.39 and 1,427,854.64 is: 1,970,581.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912,130.25 : 2,638,930.39 = 1,427,854.64 : x
  2. Step 2: Convert to fraction form
    1,912,130.25/2,638,930.39 = 1,427,854.64/x
  3. Step 3: Cross multiply
    1,912,130.25x = 2,638,930.39 × 1,427,854.64
  4. Step 4: Simplify right side
    1,912,130.25x = 3,768,008,985,234.22
  5. Step 5: Solve for x
    x = 3,768,008,985,234.22/1,912,130.25
  6. Step 6: Final answer
    x = 1,970,581.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.