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Finding the Fourth Proportional to 989,302, 1,365,236.82 and 559,572.88

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Solution

The fourth proportional to 989,302, 1,365,236.82 and 559,572.88 is: 772,210.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,302 : 1,365,236.82 = 559,572.88 : x
  2. Step 2: Convert to fraction form
    989,302/1,365,236.82 = 559,572.88/x
  3. Step 3: Cross multiply
    989,302x = 1,365,236.82 × 559,572.88
  4. Step 4: Simplify right side
    989,302x = 763,949,499,249.44
  5. Step 5: Solve for x
    x = 763,949,499,249.44/989,302
  6. Step 6: Final answer
    x = 772,210.61

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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.