Home / 642,079,989.36-886,074,920.64-348,724,557.36

Finding the Fourth Proportional to 642,079,989.36, 886,074,920.64 and 348,724,557.36

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Solution

The fourth proportional to 642,079,989.36, 886,074,920.64 and 348,724,557.36 is: 481,242,352.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,079,989.36 : 886,074,920.64 = 348,724,557.36 : x
  2. Step 2: Convert to fraction form
    642,079,989.36/886,074,920.64 = 348,724,557.36/x
  3. Step 3: Cross multiply
    642,079,989.36x = 886,074,920.64 × 348,724,557.36
  4. Step 4: Simplify right side
    642,079,989.36x = 308,996,084,487,981,120
  5. Step 5: Solve for x
    x = 308,996,084,487,981,120/642,079,989.36
  6. Step 6: Final answer
    x = 481,242,352.37

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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.