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Finding the Fourth Proportional to 404,999.20, 606,842.70 and 345,950.20

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Solution

The fourth proportional to 404,999.20, 606,842.70 and 345,950.20 is: 518,364.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,999.20 : 606,842.70 = 345,950.20 : x
  2. Step 2: Convert to fraction form
    404,999.20/606,842.70 = 345,950.20/x
  3. Step 3: Cross multiply
    404,999.20x = 606,842.70 × 345,950.20
  4. Step 4: Simplify right side
    404,999.20x = 209,937,353,433.54
  5. Step 5: Solve for x
    x = 209,937,353,433.54/404,999.20
  6. Step 6: Final answer
    x = 518,364.86

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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.