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Finding the Fourth Proportional to 487,119.60, 729,642.60 and 404,175.60

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Solution

The fourth proportional to 487,119.60, 729,642.60 and 404,175.60 is: 605,403.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,119.60 : 729,642.60 = 404,175.60 : x
  2. Step 2: Convert to fraction form
    487,119.60/729,642.60 = 404,175.60/x
  3. Step 3: Cross multiply
    487,119.60x = 729,642.60 × 404,175.60
  4. Step 4: Simplify right side
    487,119.60x = 294,903,735,640.56
  5. Step 5: Solve for x
    x = 294,903,735,640.56/487,119.60
  6. Step 6: Final answer
    x = 605,403.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.