Home / 678,618.12-1,017,795.96-205,192.56

Finding the Fourth Proportional to 678,618.12, 1,017,795.96 and 205,192.56

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Solution

The fourth proportional to 678,618.12, 1,017,795.96 and 205,192.56 is: 307,749.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,618.12 : 1,017,795.96 = 205,192.56 : x
  2. Step 2: Convert to fraction form
    678,618.12/1,017,795.96 = 205,192.56/x
  3. Step 3: Cross multiply
    678,618.12x = 1,017,795.96 × 205,192.56
  4. Step 4: Simplify right side
    678,618.12x = 208,844,158,590.06
  5. Step 5: Solve for x
    x = 208,844,158,590.06/678,618.12
  6. Step 6: Final answer
    x = 307,749.16

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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.