Home / 1,388,083.40-1,915,541.97-776,229.16

Finding the Fourth Proportional to 1,388,083.40, 1,915,541.97 and 776,229.16

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Solution

The fourth proportional to 1,388,083.40, 1,915,541.97 and 776,229.16 is: 1,071,188.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,083.40 : 1,915,541.97 = 776,229.16 : x
  2. Step 2: Convert to fraction form
    1,388,083.40/1,915,541.97 = 776,229.16/x
  3. Step 3: Cross multiply
    1,388,083.40x = 1,915,541.97 × 776,229.16
  4. Step 4: Simplify right side
    1,388,083.40x = 1,486,899,534,317.85
  5. Step 5: Solve for x
    x = 1,486,899,534,317.85/1,388,083.40
  6. Step 6: Final answer
    x = 1,071,188.90

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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.