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Finding the Fourth Proportional to 605,610.40, 908,415.60 and 406,544.80

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Solution

The fourth proportional to 605,610.40, 908,415.60 and 406,544.80 is: 609,817.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,610.40 : 908,415.60 = 406,544.80 : x
  2. Step 2: Convert to fraction form
    605,610.40/908,415.60 = 406,544.80/x
  3. Step 3: Cross multiply
    605,610.40x = 908,415.60 × 406,544.80
  4. Step 4: Simplify right side
    605,610.40x = 369,311,638,418.88
  5. Step 5: Solve for x
    x = 369,311,638,418.88/605,610.40
  6. Step 6: Final answer
    x = 609,817.20

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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.