Home / 642,079,990.36-886,074,921.66-348,724,558.36

Finding the Fourth Proportional to 642,079,990.36, 886,074,921.66 and 348,724,558.36

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Solution

The fourth proportional to 642,079,990.36, 886,074,921.66 and 348,724,558.36 is: 481,242,353.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,079,990.36 : 886,074,921.66 = 348,724,558.36 : x
  2. Step 2: Convert to fraction form
    642,079,990.36/886,074,921.66 = 348,724,558.36/x
  3. Step 3: Cross multiply
    642,079,990.36x = 886,074,921.66 × 348,724,558.36
  4. Step 4: Simplify right side
    642,079,990.36x = 308,996,085,729,755,072
  5. Step 5: Solve for x
    x = 308,996,085,729,755,072/642,079,990.36
  6. Step 6: Final answer
    x = 481,242,353.55

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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.