Home / 1,398,085.41-1,929,339.52-786,237.97

Finding the Fourth Proportional to 1,398,085.41, 1,929,339.52 and 786,237.97

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Solution

The fourth proportional to 1,398,085.41, 1,929,339.52 and 786,237.97 is: 1,084,998.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,085.41 : 1,929,339.52 = 786,237.97 : x
  2. Step 2: Convert to fraction form
    1,398,085.41/1,929,339.52 = 786,237.97/x
  3. Step 3: Cross multiply
    1,398,085.41x = 1,929,339.52 × 786,237.97
  4. Step 4: Simplify right side
    1,398,085.41x = 1,516,919,987,645.57
  5. Step 5: Solve for x
    x = 1,516,919,987,645.57/1,398,085.41
  6. Step 6: Final answer
    x = 1,084,998.08

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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.