Home / 1,128,990,739.20-1,691,017,071.36-800,470,446.72

Finding the Fourth Proportional to 1,128,990,739.20, 1,691,017,071.36 and 800,470,446.72

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Solution

The fourth proportional to 1,128,990,739.20, 1,691,017,071.36 and 800,470,446.72 is: 1,198,955,087.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,990,739.20 : 1,691,017,071.36 = 800,470,446.72 : x
  2. Step 2: Convert to fraction form
    1,128,990,739.20/1,691,017,071.36 = 800,470,446.72/x
  3. Step 3: Cross multiply
    1,128,990,739.20x = 1,691,017,071.36 × 800,470,446.72
  4. Step 4: Simplify right side
    1,128,990,739.20x = 1,353,609,190,522,685,184
  5. Step 5: Solve for x
    x = 1,353,609,190,522,685,184/1,128,990,739.20
  6. Step 6: Final answer
    x = 1,198,955,087.52

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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.