Home / 990,647,992.67-1,485,972,265.14-291,140,090.64

Finding the Fourth Proportional to 990,647,992.67, 1,485,972,265.14 and 291,140,090.64

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Solution

The fourth proportional to 990,647,992.67, 1,485,972,265.14 and 291,140,090.64 is: 436,710,217.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,647,992.67 : 1,485,972,265.14 = 291,140,090.64 : x
  2. Step 2: Convert to fraction form
    990,647,992.67/1,485,972,265.14 = 291,140,090.64/x
  3. Step 3: Cross multiply
    990,647,992.67x = 1,485,972,265.14 × 291,140,090.64
  4. Step 4: Simplify right side
    990,647,992.67x = 432,626,099,961,385,728
  5. Step 5: Solve for x
    x = 432,626,099,961,385,728/990,647,992.67
  6. Step 6: Final answer
    x = 436,710,217.12

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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.