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Finding the Fourth Proportional to 403,326.40, 600,850.64 and 385,130.56

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Solution

The fourth proportional to 403,326.40, 600,850.64 and 385,130.56 is: 573,743.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,326.40 : 600,850.64 = 385,130.56 : x
  2. Step 2: Convert to fraction form
    403,326.40/600,850.64 = 385,130.56/x
  3. Step 3: Cross multiply
    403,326.40x = 600,850.64 × 385,130.56
  4. Step 4: Simplify right side
    403,326.40x = 231,405,943,459.56
  5. Step 5: Solve for x
    x = 231,405,943,459.56/403,326.40
  6. Step 6: Final answer
    x = 573,743.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.