Home / 1,380,078,711.51-2,070,764,515.44-680,189,311.98

Finding the Fourth Proportional to 1,380,078,711.51, 2,070,764,515.44 and 680,189,311.98

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Solution

The fourth proportional to 1,380,078,711.51, 2,070,764,515.44 and 680,189,311.98 is: 1,020,602,578.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,078,711.51 : 2,070,764,515.44 = 680,189,311.98 : x
  2. Step 2: Convert to fraction form
    1,380,078,711.51/2,070,764,515.44 = 680,189,311.98/x
  3. Step 3: Cross multiply
    1,380,078,711.51x = 2,070,764,515.44 × 680,189,311.98
  4. Step 4: Simplify right side
    1,380,078,711.51x = 1,408,511,891,029,731,840
  5. Step 5: Solve for x
    x = 1,408,511,891,029,731,840/1,380,078,711.51
  6. Step 6: Final answer
    x = 1,020,602,578.16

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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.