Home / 781,078.14-1,077,969.02-449,945.50

Finding the Fourth Proportional to 781,078.14, 1,077,969.02 and 449,945.50

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Solution

The fourth proportional to 781,078.14, 1,077,969.02 and 449,945.50 is: 620,971.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,078.14 : 1,077,969.02 = 449,945.50 : x
  2. Step 2: Convert to fraction form
    781,078.14/1,077,969.02 = 449,945.50/x
  3. Step 3: Cross multiply
    781,078.14x = 1,077,969.02 × 449,945.50
  4. Step 4: Simplify right side
    781,078.14x = 485,027,304,743.76
  5. Step 5: Solve for x
    x = 485,027,304,743.76/781,078.14
  6. Step 6: Final answer
    x = 620,971.55

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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.