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Finding the Fourth Proportional to 616,122.90, 922,629.15 and 404,615.70

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Solution

The fourth proportional to 616,122.90, 922,629.15 and 404,615.70 is: 605,902.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,122.90 : 922,629.15 = 404,615.70 : x
  2. Step 2: Convert to fraction form
    616,122.90/922,629.15 = 404,615.70/x
  3. Step 3: Cross multiply
    616,122.90x = 922,629.15 × 404,615.70
  4. Step 4: Simplify right side
    616,122.90x = 373,310,239,367.66
  5. Step 5: Solve for x
    x = 373,310,239,367.66/616,122.90
  6. Step 6: Final answer
    x = 605,902.23

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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.