Home / 1,222,235.93-1,686,653.16-678,357.68

Finding the Fourth Proportional to 1,222,235.93, 1,686,653.16 and 678,357.68

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Solution

The fourth proportional to 1,222,235.93, 1,686,653.16 and 678,357.68 is: 936,115.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,235.93 : 1,686,653.16 = 678,357.68 : x
  2. Step 2: Convert to fraction form
    1,222,235.93/1,686,653.16 = 678,357.68/x
  3. Step 3: Cross multiply
    1,222,235.93x = 1,686,653.16 × 678,357.68
  4. Step 4: Simplify right side
    1,222,235.93x = 1,144,154,124,582.27
  5. Step 5: Solve for x
    x = 1,144,154,124,582.27/1,222,235.93
  6. Step 6: Final answer
    x = 936,115.61

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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.