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Finding the Fourth Proportional to 386,338.60, 579,507.90 and 364,687.30

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Solution

The fourth proportional to 386,338.60, 579,507.90 and 364,687.30 is: 547,030.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,338.60 : 579,507.90 = 364,687.30 : x
  2. Step 2: Convert to fraction form
    386,338.60/579,507.90 = 364,687.30/x
  3. Step 3: Cross multiply
    386,338.60x = 579,507.90 × 364,687.30
  4. Step 4: Simplify right side
    386,338.60x = 211,339,171,379.67
  5. Step 5: Solve for x
    x = 211,339,171,379.67/386,338.60
  6. Step 6: Final answer
    x = 547,030.95

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Similar ratio
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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.