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Finding the Fourth Proportional to 989,489, 1,365,495.24 and 559,760

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Solution

The fourth proportional to 989,489, 1,365,495.24 and 559,760 is: 772,469.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,489 : 1,365,495.24 = 559,760 : x
  2. Step 2: Convert to fraction form
    989,489/1,365,495.24 = 559,760/x
  3. Step 3: Cross multiply
    989,489x = 1,365,495.24 × 559,760
  4. Step 4: Simplify right side
    989,489x = 764,349,615,542.40
  5. Step 5: Solve for x
    x = 764,349,615,542.40/989,489
  6. Step 6: Final answer
    x = 772,469.04

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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.