Home / 642,079,989.36-886,074,920.28-348,724,557.36

Finding the Fourth Proportional to 642,079,989.36, 886,074,920.28 and 348,724,557.36

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Solution

The fourth proportional to 642,079,989.36, 886,074,920.28 and 348,724,557.36 is: 481,242,352.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,079,989.36 : 886,074,920.28 = 348,724,557.36 : x
  2. Step 2: Convert to fraction form
    642,079,989.36/886,074,920.28 = 348,724,557.36/x
  3. Step 3: Cross multiply
    642,079,989.36x = 886,074,920.28 × 348,724,557.36
  4. Step 4: Simplify right side
    642,079,989.36x = 308,996,084,362,440,320
  5. Step 5: Solve for x
    x = 308,996,084,362,440,320/642,079,989.36
  6. Step 6: Final answer
    x = 481,242,352.17

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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.