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Finding the Fourth Proportional to 404,779.80, 606,651.30 and 310,819.80

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Solution

The fourth proportional to 404,779.80, 606,651.30 and 310,819.80 is: 465,831.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,779.80 : 606,651.30 = 310,819.80 : x
  2. Step 2: Convert to fraction form
    404,779.80/606,651.30 = 310,819.80/x
  3. Step 3: Cross multiply
    404,779.80x = 606,651.30 × 310,819.80
  4. Step 4: Simplify right side
    404,779.80x = 188,559,235,735.74
  5. Step 5: Solve for x
    x = 188,559,235,735.74/404,779.80
  6. Step 6: Final answer
    x = 465,831.63

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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.