Home / 1,647,203,694.72-2,470,803,455.52-420,372,173.76

Finding the Fourth Proportional to 1,647,203,694.72, 2,470,803,455.52 and 420,372,173.76

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Solution

The fourth proportional to 1,647,203,694.72, 2,470,803,455.52 and 420,372,173.76 is: 630,557,728.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647,203,694.72 : 2,470,803,455.52 = 420,372,173.76 : x
  2. Step 2: Convert to fraction form
    1,647,203,694.72/2,470,803,455.52 = 420,372,173.76/x
  3. Step 3: Cross multiply
    1,647,203,694.72x = 2,470,803,455.52 × 420,372,173.76
  4. Step 4: Simplify right side
    1,647,203,694.72x = 1,038,657,019,530,661,888
  5. Step 5: Solve for x
    x = 1,038,657,019,530,661,888/1,647,203,694.72
  6. Step 6: Final answer
    x = 630,557,728.14

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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.