Home / 1,115,823.70-1,540,005.04-680,493.62

Finding the Fourth Proportional to 1,115,823.70, 1,540,005.04 and 680,493.62

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Solution

The fourth proportional to 1,115,823.70, 1,540,005.04 and 680,493.62 is: 939,183.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,823.70 : 1,540,005.04 = 680,493.62 : x
  2. Step 2: Convert to fraction form
    1,115,823.70/1,540,005.04 = 680,493.62/x
  3. Step 3: Cross multiply
    1,115,823.70x = 1,540,005.04 × 680,493.62
  4. Step 4: Simplify right side
    1,115,823.70x = 1,047,963,609,188.47
  5. Step 5: Solve for x
    x = 1,047,963,609,188.47/1,115,823.70
  6. Step 6: Final answer
    x = 939,183.86

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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.