Home / 1,151,765.28-1,589,438.64-642,500.64

Finding the Fourth Proportional to 1,151,765.28, 1,589,438.64 and 642,500.64

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Solution

The fourth proportional to 1,151,765.28, 1,589,438.64 and 642,500.64 is: 886,652.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,151,765.28 : 1,589,438.64 = 642,500.64 : x
  2. Step 2: Convert to fraction form
    1,151,765.28/1,589,438.64 = 642,500.64/x
  3. Step 3: Cross multiply
    1,151,765.28x = 1,589,438.64 × 642,500.64
  4. Step 4: Simplify right side
    1,151,765.28x = 1,021,215,343,440.73
  5. Step 5: Solve for x
    x = 1,021,215,343,440.73/1,151,765.28
  6. Step 6: Final answer
    x = 886,652.31

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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.