Home / 990,498,973.44-1,485,781,508.64-445,242,120.96

Finding the Fourth Proportional to 990,498,973.44, 1,485,781,508.64 and 445,242,120.96

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Solution

The fourth proportional to 990,498,973.44, 1,485,781,508.64 and 445,242,120.96 is: 667,878,037.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,498,973.44 : 1,485,781,508.64 = 445,242,120.96 : x
  2. Step 2: Convert to fraction form
    990,498,973.44/1,485,781,508.64 = 445,242,120.96/x
  3. Step 3: Cross multiply
    990,498,973.44x = 1,485,781,508.64 × 445,242,120.96
  4. Step 4: Simplify right side
    990,498,973.44x = 661,532,510,190,022,144
  5. Step 5: Solve for x
    x = 661,532,510,190,022,144/990,498,973.44
  6. Step 6: Final answer
    x = 667,878,037.16

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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.