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Finding the Fourth Proportional to 403,433.40, 605,150.10 and 385,062.60

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Solution

The fourth proportional to 403,433.40, 605,150.10 and 385,062.60 is: 577,593.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,433.40 : 605,150.10 = 385,062.60 : x
  2. Step 2: Convert to fraction form
    403,433.40/605,150.10 = 385,062.60/x
  3. Step 3: Cross multiply
    403,433.40x = 605,150.10 × 385,062.60
  4. Step 4: Simplify right side
    403,433.40x = 233,020,670,896.26
  5. Step 5: Solve for x
    x = 233,020,670,896.26/403,433.40
  6. Step 6: Final answer
    x = 577,593.90

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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.