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Finding the Fourth Proportional to 605,107.60, 907,855.80 and 405,653.20

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Solution

The fourth proportional to 605,107.60, 907,855.80 and 405,653.20 is: 608,610.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,107.60 : 907,855.80 = 405,653.20 : x
  2. Step 2: Convert to fraction form
    605,107.60/907,855.80 = 405,653.20/x
  3. Step 3: Cross multiply
    605,107.60x = 907,855.80 × 405,653.20
  4. Step 4: Simplify right side
    605,107.60x = 368,274,610,408.56
  5. Step 5: Solve for x
    x = 368,274,610,408.56/605,107.60
  6. Step 6: Final answer
    x = 608,610.12

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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.