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Finding the Fourth Proportional to 403,784.20, 605,676.30 and 325,052.20

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Solution

The fourth proportional to 403,784.20, 605,676.30 and 325,052.20 is: 487,578.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,784.20 : 605,676.30 = 325,052.20 : x
  2. Step 2: Convert to fraction form
    403,784.20/605,676.30 = 325,052.20/x
  3. Step 3: Cross multiply
    403,784.20x = 605,676.30 × 325,052.20
  4. Step 4: Simplify right side
    403,784.20x = 196,876,413,802.86
  5. Step 5: Solve for x
    x = 196,876,413,802.86/403,784.20
  6. Step 6: Final answer
    x = 487,578.30

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1.5x scale

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.