Home / 1,221,933.27-1,686,131.08-678,091.98

Finding the Fourth Proportional to 1,221,933.27, 1,686,131.08 and 678,091.98

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Solution

The fourth proportional to 1,221,933.27, 1,686,131.08 and 678,091.98 is: 935,691.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,933.27 : 1,686,131.08 = 678,091.98 : x
  2. Step 2: Convert to fraction form
    1,221,933.27/1,686,131.08 = 678,091.98/x
  3. Step 3: Cross multiply
    1,221,933.27x = 1,686,131.08 × 678,091.98
  4. Step 4: Simplify right side
    1,221,933.27x = 1,143,351,962,576.74
  5. Step 5: Solve for x
    x = 1,143,351,962,576.74/1,221,933.27
  6. Step 6: Final answer
    x = 935,691.00

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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.