Home / 445,827,764.40-668,741,646.60-139,080,019.20

Finding the Fourth Proportional to 445,827,764.40, 668,741,646.60 and 139,080,019.20

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Solution

The fourth proportional to 445,827,764.40, 668,741,646.60 and 139,080,019.20 is: 208,620,028.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,827,764.40 : 668,741,646.60 = 139,080,019.20 : x
  2. Step 2: Convert to fraction form
    445,827,764.40/668,741,646.60 = 139,080,019.20/x
  3. Step 3: Cross multiply
    445,827,764.40x = 668,741,646.60 × 139,080,019.20
  4. Step 4: Simplify right side
    445,827,764.40x = 93,008,601,048,967,616
  5. Step 5: Solve for x
    x = 93,008,601,048,967,616/445,827,764.40
  6. Step 6: Final answer
    x = 208,620,028.80

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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.