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Finding the Fourth Proportional to 1,203,162, 1,660,363.56 and 666,618

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Solution

The fourth proportional to 1,203,162, 1,660,363.56 and 666,618 is: 919,932.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203,162 : 1,660,363.56 = 666,618 : x
  2. Step 2: Convert to fraction form
    1,203,162/1,660,363.56 = 666,618/x
  3. Step 3: Cross multiply
    1,203,162x = 1,660,363.56 × 666,618
  4. Step 4: Simplify right side
    1,203,162x = 1,106,828,235,640.08
  5. Step 5: Solve for x
    x = 1,106,828,235,640.08/1,203,162
  6. Step 6: Final answer
    x = 919,932.84

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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.