Home / 1,238,478,201.61-1,709,100,197.19-681,561,248.67

Finding the Fourth Proportional to 1,238,478,201.61, 1,709,100,197.19 and 681,561,248.67

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Solution

The fourth proportional to 1,238,478,201.61, 1,709,100,197.19 and 681,561,248.67 is: 940,554,676.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,478,201.61 : 1,709,100,197.19 = 681,561,248.67 : x
  2. Step 2: Convert to fraction form
    1,238,478,201.61/1,709,100,197.19 = 681,561,248.67/x
  3. Step 3: Cross multiply
    1,238,478,201.61x = 1,709,100,197.19 × 681,561,248.67
  4. Step 4: Simplify right side
    1,238,478,201.61x = 1,164,856,464,498,959,616
  5. Step 5: Solve for x
    x = 1,164,856,464,498,959,616/1,238,478,201.61
  6. Step 6: Final answer
    x = 940,554,676.69

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Double scale
Find fourth proportional to 1,238,478,202.61, 1,709,100,198.57 and 681,561,249.67
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1.5x scale

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.