Home / 685,999.62-1,024,105.39-640,411.83

Finding the Fourth Proportional to 685,999.62, 1,024,105.39 and 640,411.83

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Solution

The fourth proportional to 685,999.62, 1,024,105.39 and 640,411.83 is: 956,048.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,999.62 : 1,024,105.39 = 640,411.83 : x
  2. Step 2: Convert to fraction form
    685,999.62/1,024,105.39 = 640,411.83/x
  3. Step 3: Cross multiply
    685,999.62x = 1,024,105.39 × 640,411.83
  4. Step 4: Simplify right side
    685,999.62x = 655,849,206,922.76
  5. Step 5: Solve for x
    x = 655,849,206,922.76/685,999.62
  6. Step 6: Final answer
    x = 956,048.94

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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.