Home / 439,810.60-658,841.10-408,317.80

Finding the Fourth Proportional to 439,810.60, 658,841.10 and 408,317.80

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Solution

The fourth proportional to 439,810.60, 658,841.10 and 408,317.80 is: 611,664.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,810.60 : 658,841.10 = 408,317.80 : x
  2. Step 2: Convert to fraction form
    439,810.60/658,841.10 = 408,317.80/x
  3. Step 3: Cross multiply
    439,810.60x = 658,841.10 × 408,317.80
  4. Step 4: Simplify right side
    439,810.60x = 269,016,548,501.58
  5. Step 5: Solve for x
    x = 269,016,548,501.58/439,810.60
  6. Step 6: Final answer
    x = 611,664.54

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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.