Home / 3,426,631,372.76-4,728,660,052.21-1,978,158,339.56

Finding the Fourth Proportional to 3,426,631,372.76, 4,728,660,052.21 and 1,978,158,339.56

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Solution

The fourth proportional to 3,426,631,372.76, 4,728,660,052.21 and 1,978,158,339.56 is: 2,729,805,835.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,426,631,372.76 : 4,728,660,052.21 = 1,978,158,339.56 : x
  2. Step 2: Convert to fraction form
    3,426,631,372.76/4,728,660,052.21 = 1,978,158,339.56/x
  3. Step 3: Cross multiply
    3,426,631,372.76x = 4,728,660,052.21 × 1,978,158,339.56
  4. Step 4: Simplify right side
    3,426,631,372.76x = 9,354,038,317,230,313,472
  5. Step 5: Solve for x
    x = 9,354,038,317,230,313,472/3,426,631,372.76
  6. Step 6: Final answer
    x = 2,729,805,835.43

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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.