Home / 889,386,997.12-1,227,354,172.41-492,935,581.78

Finding the Fourth Proportional to 889,386,997.12, 1,227,354,172.41 and 492,935,581.78

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Solution

The fourth proportional to 889,386,997.12, 1,227,354,172.41 and 492,935,581.78 is: 680,251,167.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,386,997.12 : 1,227,354,172.41 = 492,935,581.78 : x
  2. Step 2: Convert to fraction form
    889,386,997.12/1,227,354,172.41 = 492,935,581.78/x
  3. Step 3: Cross multiply
    889,386,997.12x = 1,227,354,172.41 × 492,935,581.78
  4. Step 4: Simplify right side
    889,386,997.12x = 605,006,543,027,033,728
  5. Step 5: Solve for x
    x = 605,006,543,027,033,728/889,386,997.12
  6. Step 6: Final answer
    x = 680,251,167.36

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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.