Home / 810,845,262.49-1,216,145,002.89-220,681,491.21

Finding the Fourth Proportional to 810,845,262.49, 1,216,145,002.89 and 220,681,491.21

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Solution

The fourth proportional to 810,845,262.49, 1,216,145,002.89 and 220,681,491.21 is: 330,988,790.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,845,262.49 : 1,216,145,002.89 = 220,681,491.21 : x
  2. Step 2: Convert to fraction form
    810,845,262.49/1,216,145,002.89 = 220,681,491.21/x
  3. Step 3: Cross multiply
    810,845,262.49x = 1,216,145,002.89 × 220,681,491.21
  4. Step 4: Simplify right side
    810,845,262.49x = 268,380,692,765,355,008
  5. Step 5: Solve for x
    x = 268,380,692,765,355,008/810,845,262.49
  6. Step 6: Final answer
    x = 330,988,790.56

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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.