Home / 678,618.16-1,017,795.92-205,192.56

Finding the Fourth Proportional to 678,618.16, 1,017,795.92 and 205,192.56

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Solution

The fourth proportional to 678,618.16, 1,017,795.92 and 205,192.56 is: 307,749.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,618.16 : 1,017,795.92 = 205,192.56 : x
  2. Step 2: Convert to fraction form
    678,618.16/1,017,795.92 = 205,192.56/x
  3. Step 3: Cross multiply
    678,618.16x = 1,017,795.92 × 205,192.56
  4. Step 4: Simplify right side
    678,618.16x = 208,844,150,382.36
  5. Step 5: Solve for x
    x = 208,844,150,382.36/678,618.16
  6. Step 6: Final answer
    x = 307,749.13

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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.