Home / 1,221,992.91-1,686,368.56-678,163.93

Finding the Fourth Proportional to 1,221,992.91, 1,686,368.56 and 678,163.93

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Solution

The fourth proportional to 1,221,992.91, 1,686,368.56 and 678,163.93 is: 935,876.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,992.91 : 1,686,368.56 = 678,163.93 : x
  2. Step 2: Convert to fraction form
    1,221,992.91/1,686,368.56 = 678,163.93/x
  3. Step 3: Cross multiply
    1,221,992.91x = 1,686,368.56 × 678,163.93
  4. Step 4: Simplify right side
    1,221,992.91x = 1,143,634,324,166.71
  5. Step 5: Solve for x
    x = 1,143,634,324,166.71/1,221,992.91
  6. Step 6: Final answer
    x = 935,876.40

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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.