Home / 1,238,478,360.98-1,709,100,419.85-681,561,408.11

Finding the Fourth Proportional to 1,238,478,360.98, 1,709,100,419.85 and 681,561,408.11

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Solution

The fourth proportional to 1,238,478,360.98, 1,709,100,419.85 and 681,561,408.11 is: 940,554,898.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,478,360.98 : 1,709,100,419.85 = 681,561,408.11 : x
  2. Step 2: Convert to fraction form
    1,238,478,360.98/1,709,100,419.85 = 681,561,408.11/x
  3. Step 3: Cross multiply
    1,238,478,360.98x = 1,709,100,419.85 × 681,561,408.11
  4. Step 4: Simplify right side
    1,238,478,360.98x = 1,164,856,888,745,812,736
  5. Step 5: Solve for x
    x = 1,164,856,888,745,812,736/1,238,478,360.98
  6. Step 6: Final answer
    x = 940,554,898.21

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Double scale
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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.