Home / 786,661.68-1,085,590.80-447,195.36

Finding the Fourth Proportional to 786,661.68, 1,085,590.80 and 447,195.36

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Solution

The fourth proportional to 786,661.68, 1,085,590.80 and 447,195.36 is: 617,128.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,661.68 : 1,085,590.80 = 447,195.36 : x
  2. Step 2: Convert to fraction form
    786,661.68/1,085,590.80 = 447,195.36/x
  3. Step 3: Cross multiply
    786,661.68x = 1,085,590.80 × 447,195.36
  4. Step 4: Simplify right side
    786,661.68x = 485,471,168,618.69
  5. Step 5: Solve for x
    x = 485,471,168,618.69/786,661.68
  6. Step 6: Final answer
    x = 617,128.28

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1.5x scale

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.