Home / 1,398,081.79-1,929,334.47-786,234.37

Finding the Fourth Proportional to 1,398,081.79, 1,929,334.47 and 786,234.37

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Solution

The fourth proportional to 1,398,081.79, 1,929,334.47 and 786,234.37 is: 1,084,993.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,081.79 : 1,929,334.47 = 786,234.37 : x
  2. Step 2: Convert to fraction form
    1,398,081.79/1,929,334.47 = 786,234.37/x
  3. Step 3: Cross multiply
    1,398,081.79x = 1,929,334.47 × 786,234.37
  4. Step 4: Simplify right side
    1,398,081.79x = 1,516,909,071,539.73
  5. Step 5: Solve for x
    x = 1,516,909,071,539.73/1,398,081.79
  6. Step 6: Final answer
    x = 1,084,993.08

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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.