Home / 2,167,909,786.86-2,991,715,505.76-1,228,112,428.74

Finding the Fourth Proportional to 2,167,909,786.86, 2,991,715,505.76 and 1,228,112,428.74

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Solution

The fourth proportional to 2,167,909,786.86, 2,991,715,505.76 and 1,228,112,428.74 is: 1,694,795,151.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,167,909,786.86 : 2,991,715,505.76 = 1,228,112,428.74 : x
  2. Step 2: Convert to fraction form
    2,167,909,786.86/2,991,715,505.76 = 1,228,112,428.74/x
  3. Step 3: Cross multiply
    2,167,909,786.86x = 2,991,715,505.76 × 1,228,112,428.74
  4. Step 4: Simplify right side
    2,167,909,786.86x = 3,674,162,995,878,031,360
  5. Step 5: Solve for x
    x = 3,674,162,995,878,031,360/2,167,909,786.86
  6. Step 6: Final answer
    x = 1,694,795,151.60

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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.