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Finding the Fourth Proportional to 384,793.20, 576,533.70 and 328,368.60

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Solution

The fourth proportional to 384,793.20, 576,533.70 and 328,368.60 is: 491,993.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,793.20 : 576,533.70 = 328,368.60 : x
  2. Step 2: Convert to fraction form
    384,793.20/576,533.70 = 328,368.60/x
  3. Step 3: Cross multiply
    384,793.20x = 576,533.70 × 328,368.60
  4. Step 4: Simplify right side
    384,793.20x = 189,315,563,921.82
  5. Step 5: Solve for x
    x = 189,315,563,921.82/384,793.20
  6. Step 6: Final answer
    x = 491,993.01

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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.