Home / 683,018.31-942,647.92-388,739.58

Finding the Fourth Proportional to 683,018.31, 942,647.92 and 388,739.58

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Solution

The fourth proportional to 683,018.31, 942,647.92 and 388,739.58 is: 536,507.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,018.31 : 942,647.92 = 388,739.58 : x
  2. Step 2: Convert to fraction form
    683,018.31/942,647.92 = 388,739.58/x
  3. Step 3: Cross multiply
    683,018.31x = 942,647.92 × 388,739.58
  4. Step 4: Simplify right side
    683,018.31x = 366,444,555,536.83
  5. Step 5: Solve for x
    x = 366,444,555,536.83/683,018.31
  6. Step 6: Final answer
    x = 536,507.66

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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.