Home / 1,222,185.08-1,686,590.04-678,289.28

Finding the Fourth Proportional to 1,222,185.08, 1,686,590.04 and 678,289.28

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Solution

The fourth proportional to 1,222,185.08, 1,686,590.04 and 678,289.28 is: 936,025.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,185.08 : 1,686,590.04 = 678,289.28 : x
  2. Step 2: Convert to fraction form
    1,222,185.08/1,686,590.04 = 678,289.28/x
  3. Step 3: Cross multiply
    1,222,185.08x = 1,686,590.04 × 678,289.28
  4. Step 4: Simplify right side
    1,222,185.08x = 1,143,995,943,886.77
  5. Step 5: Solve for x
    x = 1,143,995,943,886.77/1,222,185.08
  6. Step 6: Final answer
    x = 936,025.13

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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.