Home / 685,998.72-1,024,104.08-640,410.96

Finding the Fourth Proportional to 685,998.72, 1,024,104.08 and 640,410.96

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Solution

The fourth proportional to 685,998.72, 1,024,104.08 and 640,410.96 is: 956,047.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,998.72 : 1,024,104.08 = 640,410.96 : x
  2. Step 2: Convert to fraction form
    685,998.72/1,024,104.08 = 640,410.96/x
  3. Step 3: Cross multiply
    685,998.72x = 1,024,104.08 × 640,410.96
  4. Step 4: Simplify right side
    685,998.72x = 655,847,477,012.72
  5. Step 5: Solve for x
    x = 655,847,477,012.72/685,998.72
  6. Step 6: Final answer
    x = 956,047.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.