Home / 778,385.94-1,073,615.31-505,945.68

Finding the Fourth Proportional to 778,385.94, 1,073,615.31 and 505,945.68

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Solution

The fourth proportional to 778,385.94, 1,073,615.31 and 505,945.68 is: 697,842.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,385.94 : 1,073,615.31 = 505,945.68 : x
  2. Step 2: Convert to fraction form
    778,385.94/1,073,615.31 = 505,945.68/x
  3. Step 3: Cross multiply
    778,385.94x = 1,073,615.31 × 505,945.68
  4. Step 4: Simplify right side
    778,385.94x = 543,191,028,076.36
  5. Step 5: Solve for x
    x = 543,191,028,076.36/778,385.94
  6. Step 6: Final answer
    x = 697,842.81

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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.