Home / 678,345.39-1,017,539.73-341,201.88

Finding the Fourth Proportional to 678,345.39, 1,017,539.73 and 341,201.88

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Solution

The fourth proportional to 678,345.39, 1,017,539.73 and 341,201.88 is: 511,813.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,345.39 : 1,017,539.73 = 341,201.88 : x
  2. Step 2: Convert to fraction form
    678,345.39/1,017,539.73 = 341,201.88/x
  3. Step 3: Cross multiply
    678,345.39x = 1,017,539.73 × 341,201.88
  4. Step 4: Simplify right side
    678,345.39x = 347,186,468,850.69
  5. Step 5: Solve for x
    x = 347,186,468,850.69/678,345.39
  6. Step 6: Final answer
    x = 511,813.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.