Home / 1,647,203,689.76-2,470,803,448.08-420,372,168.80

Finding the Fourth Proportional to 1,647,203,689.76, 2,470,803,448.08 and 420,372,168.80

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Solution

The fourth proportional to 1,647,203,689.76, 2,470,803,448.08 and 420,372,168.80 is: 630,557,720.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647,203,689.76 : 2,470,803,448.08 = 420,372,168.80 : x
  2. Step 2: Convert to fraction form
    1,647,203,689.76/2,470,803,448.08 = 420,372,168.80/x
  3. Step 3: Cross multiply
    1,647,203,689.76x = 2,470,803,448.08 × 420,372,168.80
  4. Step 4: Simplify right side
    1,647,203,689.76x = 1,038,657,004,147,907,840
  5. Step 5: Solve for x
    x = 1,038,657,004,147,907,840/1,647,203,689.76
  6. Step 6: Final answer
    x = 630,557,720.70

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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.