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Finding the Fourth Proportional to 398,379.72, 596,514.96 and 328,570.68

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Solution

The fourth proportional to 398,379.72, 596,514.96 and 328,570.68 is: 491,986.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,379.72 : 596,514.96 = 328,570.68 : x
  2. Step 2: Convert to fraction form
    398,379.72/596,514.96 = 328,570.68/x
  3. Step 3: Cross multiply
    398,379.72x = 596,514.96 × 328,570.68
  4. Step 4: Simplify right side
    398,379.72x = 195,997,326,037.37
  5. Step 5: Solve for x
    x = 195,997,326,037.37/398,379.72
  6. Step 6: Final answer
    x = 491,986.20

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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.