Home / 774,736.56-1,069,263.54-645,470.28

Finding the Fourth Proportional to 774,736.56, 1,069,263.54 and 645,470.28

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Solution

The fourth proportional to 774,736.56, 1,069,263.54 and 645,470.28 is: 890,854.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,736.56 : 1,069,263.54 = 645,470.28 : x
  2. Step 2: Convert to fraction form
    774,736.56/1,069,263.54 = 645,470.28/x
  3. Step 3: Cross multiply
    774,736.56x = 1,069,263.54 × 645,470.28
  4. Step 4: Simplify right side
    774,736.56x = 690,177,836,557.59
  5. Step 5: Solve for x
    x = 690,177,836,557.59/774,736.56
  6. Step 6: Final answer
    x = 890,854.87

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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.