Home / 1,211,694,653.86-1,814,996,663.31-768,809,363.68

Finding the Fourth Proportional to 1,211,694,653.86, 1,814,996,663.31 and 768,809,363.68

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Solution

The fourth proportional to 1,211,694,653.86, 1,814,996,663.31 and 768,809,363.68 is: 1,151,599,064.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,694,653.86 : 1,814,996,663.31 = 768,809,363.68 : x
  2. Step 2: Convert to fraction form
    1,211,694,653.86/1,814,996,663.31 = 768,809,363.68/x
  3. Step 3: Cross multiply
    1,211,694,653.86x = 1,814,996,663.31 × 768,809,363.68
  4. Step 4: Simplify right side
    1,211,694,653.86x = 1,395,386,429,795,619,840
  5. Step 5: Solve for x
    x = 1,395,386,429,795,619,840/1,211,694,653.86
  6. Step 6: Final answer
    x = 1,151,599,064.46

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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.