Home / 789,776.34-1,089,887.24-427,199.09

Finding the Fourth Proportional to 789,776.34, 1,089,887.24 and 427,199.09

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Solution

The fourth proportional to 789,776.34, 1,089,887.24 and 427,199.09 is: 589,532.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,776.34 : 1,089,887.24 = 427,199.09 : x
  2. Step 2: Convert to fraction form
    789,776.34/1,089,887.24 = 427,199.09/x
  3. Step 3: Cross multiply
    789,776.34x = 1,089,887.24 × 427,199.09
  4. Step 4: Simplify right side
    789,776.34x = 465,598,829,545.18
  5. Step 5: Solve for x
    x = 465,598,829,545.18/789,776.34
  6. Step 6: Final answer
    x = 589,532.51

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1.5x scale

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.