Home / 2,167,311,071.91-2,991,137,388.38-1,214,949,030.78

Finding the Fourth Proportional to 2,167,311,071.91, 2,991,137,388.38 and 1,214,949,030.78

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Solution

The fourth proportional to 2,167,311,071.91, 2,991,137,388.38 and 1,214,949,030.78 is: 1,676,768,747.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,167,311,071.91 : 2,991,137,388.38 = 1,214,949,030.78 : x
  2. Step 2: Convert to fraction form
    2,167,311,071.91/2,991,137,388.38 = 1,214,949,030.78/x
  3. Step 3: Cross multiply
    2,167,311,071.91x = 2,991,137,388.38 × 1,214,949,030.78
  4. Step 4: Simplify right side
    2,167,311,071.91x = 3,634,079,470,951,887,872
  5. Step 5: Solve for x
    x = 3,634,079,470,951,887,872/2,167,311,071.91
  6. Step 6: Final answer
    x = 1,676,768,747.25

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Double scale
Find fourth proportional to 2,167,311,072.91, 2,991,137,389.76 and 1,214,949,031.78
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.