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Finding the Fourth Proportional to 384,790.20, 576,529.20 and 328,365.60

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Solution

The fourth proportional to 384,790.20, 576,529.20 and 328,365.60 is: 491,988.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,790.20 : 576,529.20 = 328,365.60 : x
  2. Step 2: Convert to fraction form
    384,790.20/576,529.20 = 328,365.60/x
  3. Step 3: Cross multiply
    384,790.20x = 576,529.20 × 328,365.60
  4. Step 4: Simplify right side
    384,790.20x = 189,312,356,675.52
  5. Step 5: Solve for x
    x = 189,312,356,675.52/384,790.20
  6. Step 6: Final answer
    x = 491,988.51

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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.