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Finding the Fourth Proportional to 504,379.24, 696,045.54 and 278,019.88

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Solution

The fourth proportional to 504,379.24, 696,045.54 and 278,019.88 is: 383,668.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,379.24 : 696,045.54 = 278,019.88 : x
  2. Step 2: Convert to fraction form
    504,379.24/696,045.54 = 278,019.88/x
  3. Step 3: Cross multiply
    504,379.24x = 696,045.54 × 278,019.88
  4. Step 4: Simplify right side
    504,379.24x = 193,514,497,505.34
  5. Step 5: Solve for x
    x = 193,514,497,505.34/504,379.24
  6. Step 6: Final answer
    x = 383,668.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.