Home / 1,917,872.70-2,874,816.45-780,146.70

Finding the Fourth Proportional to 1,917,872.70, 2,874,816.45 and 780,146.70

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Solution

The fourth proportional to 1,917,872.70, 2,874,816.45 and 780,146.70 is: 1,169,409.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917,872.70 : 2,874,816.45 = 780,146.70 : x
  2. Step 2: Convert to fraction form
    1,917,872.70/2,874,816.45 = 780,146.70/x
  3. Step 3: Cross multiply
    1,917,872.70x = 2,874,816.45 × 780,146.70
  4. Step 4: Simplify right side
    1,917,872.70x = 2,242,778,566,573.22
  5. Step 5: Solve for x
    x = 2,242,778,566,573.22/1,917,872.70
  6. Step 6: Final answer
    x = 1,169,409.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.