Home / 774,735.56-1,069,262.16-645,469.28

Finding the Fourth Proportional to 774,735.56, 1,069,262.16 and 645,469.28

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Solution

The fourth proportional to 774,735.56, 1,069,262.16 and 645,469.28 is: 890,853.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,735.56 : 1,069,262.16 = 645,469.28 : x
  2. Step 2: Convert to fraction form
    774,735.56/1,069,262.16 = 645,469.28/x
  3. Step 3: Cross multiply
    774,735.56x = 1,069,262.16 × 645,469.28
  4. Step 4: Simplify right side
    774,735.56x = 690,175,876,546.45
  5. Step 5: Solve for x
    x = 690,175,876,546.45/774,735.56
  6. Step 6: Final answer
    x = 890,853.49

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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.