Home / 425,713,735.80-638,570,603.70-263,630,100.60

Finding the Fourth Proportional to 425,713,735.80, 638,570,603.70 and 263,630,100.60

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Solution

The fourth proportional to 425,713,735.80, 638,570,603.70 and 263,630,100.60 is: 395,445,150.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,713,735.80 : 638,570,603.70 = 263,630,100.60 : x
  2. Step 2: Convert to fraction form
    425,713,735.80/638,570,603.70 = 263,630,100.60/x
  3. Step 3: Cross multiply
    425,713,735.80x = 638,570,603.70 × 263,630,100.60
  4. Step 4: Simplify right side
    425,713,735.80x = 168,346,432,493,633,728
  5. Step 5: Solve for x
    x = 168,346,432,493,633,728/425,713,735.80
  6. Step 6: Final answer
    x = 395,445,150.90

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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.