Home / 1,380,646,991.08-2,070,978,228.60-460,520,803.72

Finding the Fourth Proportional to 1,380,646,991.08, 2,070,978,228.60 and 460,520,803.72

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Solution

The fourth proportional to 1,380,646,991.08, 2,070,978,228.60 and 460,520,803.72 is: 690,783,787.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,646,991.08 : 2,070,978,228.60 = 460,520,803.72 : x
  2. Step 2: Convert to fraction form
    1,380,646,991.08/2,070,978,228.60 = 460,520,803.72/x
  3. Step 3: Cross multiply
    1,380,646,991.08x = 2,070,978,228.60 × 460,520,803.72
  4. Step 4: Simplify right side
    1,380,646,991.08x = 953,728,558,321,493,888
  5. Step 5: Solve for x
    x = 953,728,558,321,493,888/1,380,646,991.08
  6. Step 6: Final answer
    x = 690,783,787.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.