Home / 12,968,945,222.30-17,905,929,856.95-8,215,439,408.54

Finding the Fourth Proportional to 12,968,945,222.30, 17,905,929,856.95 and 8,215,439,408.54

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Solution

The fourth proportional to 12,968,945,222.30, 17,905,929,856.95 and 8,215,439,408.54 is: 11,342,871,704.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,968,945,222.30 : 17,905,929,856.95 = 8,215,439,408.54 : x
  2. Step 2: Convert to fraction form
    12,968,945,222.30/17,905,929,856.95 = 8,215,439,408.54/x
  3. Step 3: Cross multiply
    12,968,945,222.30x = 17,905,929,856.95 × 8,215,439,408.54
  4. Step 4: Simplify right side
    12,968,945,222.30x = 147,105,081,793,340,047,360
  5. Step 5: Solve for x
    x = 147,105,081,793,340,047,360/12,968,945,222.30
  6. Step 6: Final answer
    x = 11,342,871,704.05

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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.