Home / 1,147,676.85-1,721,516.67-428,007.60

Finding the Fourth Proportional to 1,147,676.85, 1,721,516.67 and 428,007.60

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Solution

The fourth proportional to 1,147,676.85, 1,721,516.67 and 428,007.60 is: 642,011.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,676.85 : 1,721,516.67 = 428,007.60 : x
  2. Step 2: Convert to fraction form
    1,147,676.85/1,721,516.67 = 428,007.60/x
  3. Step 3: Cross multiply
    1,147,676.85x = 1,721,516.67 × 428,007.60
  4. Step 4: Simplify right side
    1,147,676.85x = 736,822,218,286.69
  5. Step 5: Solve for x
    x = 736,822,218,286.69/1,147,676.85
  6. Step 6: Final answer
    x = 642,011.92

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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.