Home / 815,516.45-1,223,438.70-683,312.30

Finding the Fourth Proportional to 815,516.45, 1,223,438.70 and 683,312.30

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Solution

The fourth proportional to 815,516.45, 1,223,438.70 and 683,312.30 is: 1,025,105.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,516.45 : 1,223,438.70 = 683,312.30 : x
  2. Step 2: Convert to fraction form
    815,516.45/1,223,438.70 = 683,312.30/x
  3. Step 3: Cross multiply
    815,516.45x = 1,223,438.70 × 683,312.30
  4. Step 4: Simplify right side
    815,516.45x = 835,990,712,006.01
  5. Step 5: Solve for x
    x = 835,990,712,006.01/815,516.45
  6. Step 6: Final answer
    x = 1,025,105.88

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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.