Home / 1,388,085.36-1,915,544.67-776,231.11

Finding the Fourth Proportional to 1,388,085.36, 1,915,544.67 and 776,231.11

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Solution

The fourth proportional to 1,388,085.36, 1,915,544.67 and 776,231.11 is: 1,071,191.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,085.36 : 1,915,544.67 = 776,231.11 : x
  2. Step 2: Convert to fraction form
    1,388,085.36/1,915,544.67 = 776,231.11/x
  3. Step 3: Cross multiply
    1,388,085.36x = 1,915,544.67 × 776,231.11
  4. Step 4: Simplify right side
    1,388,085.36x = 1,486,905,360,659.82
  5. Step 5: Solve for x
    x = 1,486,905,360,659.82/1,388,085.36
  6. Step 6: Final answer
    x = 1,071,191.58

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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.