Home / 1,115,825.70-1,540,007.80-680,495.62

Finding the Fourth Proportional to 1,115,825.70, 1,540,007.80 and 680,495.62

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Solution

The fourth proportional to 1,115,825.70, 1,540,007.80 and 680,495.62 is: 939,186.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,825.70 : 1,540,007.80 = 680,495.62 : x
  2. Step 2: Convert to fraction form
    1,115,825.70/1,540,007.80 = 680,495.62/x
  3. Step 3: Cross multiply
    1,115,825.70x = 1,540,007.80 × 680,495.62
  4. Step 4: Simplify right side
    1,115,825.70x = 1,047,968,562,665.84
  5. Step 5: Solve for x
    x = 1,047,968,562,665.84/1,115,825.70
  6. Step 6: Final answer
    x = 939,186.62

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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.