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Finding the Fourth Proportional to 396,003.60, 594,005.40 and 360,061.20

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Solution

The fourth proportional to 396,003.60, 594,005.40 and 360,061.20 is: 540,091.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,003.60 : 594,005.40 = 360,061.20 : x
  2. Step 2: Convert to fraction form
    396,003.60/594,005.40 = 360,061.20/x
  3. Step 3: Cross multiply
    396,003.60x = 594,005.40 × 360,061.20
  4. Step 4: Simplify right side
    396,003.60x = 213,878,297,130.48
  5. Step 5: Solve for x
    x = 213,878,297,130.48/396,003.60
  6. Step 6: Final answer
    x = 540,091.80

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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.