Home / 1,311,773,839.20-1,967,660,758.80-342,425,455.20

Finding the Fourth Proportional to 1,311,773,839.20, 1,967,660,758.80 and 342,425,455.20

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Solution

The fourth proportional to 1,311,773,839.20, 1,967,660,758.80 and 342,425,455.20 is: 513,638,182.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,773,839.20 : 1,967,660,758.80 = 342,425,455.20 : x
  2. Step 2: Convert to fraction form
    1,311,773,839.20/1,967,660,758.80 = 342,425,455.20/x
  3. Step 3: Cross multiply
    1,311,773,839.20x = 1,967,660,758.80 × 342,425,455.20
  4. Step 4: Simplify right side
    1,311,773,839.20x = 673,777,131,011,267,328
  5. Step 5: Solve for x
    x = 673,777,131,011,267,328/1,311,773,839.20
  6. Step 6: Final answer
    x = 513,638,182.80

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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.