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Finding the Fourth Proportional to 989,338, 1,365,286.44 and 559,608.88

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Solution

The fourth proportional to 989,338, 1,365,286.44 and 559,608.88 is: 772,260.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,338 : 1,365,286.44 = 559,608.88 : x
  2. Step 2: Convert to fraction form
    989,338/1,365,286.44 = 559,608.88/x
  3. Step 3: Cross multiply
    989,338x = 1,365,286.44 × 559,608.88
  4. Step 4: Simplify right side
    989,338x = 764,026,415,567.59
  5. Step 5: Solve for x
    x = 764,026,415,567.59/989,338
  6. Step 6: Final answer
    x = 772,260.25

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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.