Home / 685,565.16-1,028,015.43-343,861.80

Finding the Fourth Proportional to 685,565.16, 1,028,015.43 and 343,861.80

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Solution

The fourth proportional to 685,565.16, 1,028,015.43 and 343,861.80 is: 515,626.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,565.16 : 1,028,015.43 = 343,861.80 : x
  2. Step 2: Convert to fraction form
    685,565.16/1,028,015.43 = 343,861.80/x
  3. Step 3: Cross multiply
    685,565.16x = 1,028,015.43 × 343,861.80
  4. Step 4: Simplify right side
    685,565.16x = 353,495,236,187.57
  5. Step 5: Solve for x
    x = 353,495,236,187.57/685,565.16
  6. Step 6: Final answer
    x = 515,626.02

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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.