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Finding the Fourth Proportional to 605,136.60, 907,899.30 and 405,682.20

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Solution

The fourth proportional to 605,136.60, 907,899.30 and 405,682.20 is: 608,653.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,136.60 : 907,899.30 = 405,682.20 : x
  2. Step 2: Convert to fraction form
    605,136.60/907,899.30 = 405,682.20/x
  3. Step 3: Cross multiply
    605,136.60x = 907,899.30 × 405,682.20
  4. Step 4: Simplify right side
    605,136.60x = 368,318,585,402.46
  5. Step 5: Solve for x
    x = 368,318,585,402.46/605,136.60
  6. Step 6: Final answer
    x = 608,653.63

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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.