Home / 679,912.96-1,019,409.28-380,600.12

Finding the Fourth Proportional to 679,912.96, 1,019,409.28 and 380,600.12

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Solution

The fourth proportional to 679,912.96, 1,019,409.28 and 380,600.12 is: 570,642.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,912.96 : 1,019,409.28 = 380,600.12 : x
  2. Step 2: Convert to fraction form
    679,912.96/1,019,409.28 = 380,600.12/x
  3. Step 3: Cross multiply
    679,912.96x = 1,019,409.28 × 380,600.12
  4. Step 4: Simplify right side
    679,912.96x = 387,987,294,297.11
  5. Step 5: Solve for x
    x = 387,987,294,297.11/679,912.96
  6. Step 6: Final answer
    x = 570,642.59

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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.