Home / 1,186,112.88-1,636,838.82-642,255.39

Finding the Fourth Proportional to 1,186,112.88, 1,636,838.82 and 642,255.39

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Solution

The fourth proportional to 1,186,112.88, 1,636,838.82 and 642,255.39 is: 886,314.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,112.88 : 1,636,838.82 = 642,255.39 : x
  2. Step 2: Convert to fraction form
    1,186,112.88/1,636,838.82 = 642,255.39/x
  3. Step 3: Cross multiply
    1,186,112.88x = 1,636,838.82 × 642,255.39
  4. Step 4: Simplify right side
    1,186,112.88x = 1,051,268,554,706.24
  5. Step 5: Solve for x
    x = 1,051,268,554,706.24/1,186,112.88
  6. Step 6: Final answer
    x = 886,314.09

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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.