Home / 869,703.93-1,200,189.12-487,738.91

Finding the Fourth Proportional to 869,703.93, 1,200,189.12 and 487,738.91

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Solution

The fourth proportional to 869,703.93, 1,200,189.12 and 487,738.91 is: 673,078.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,703.93 : 1,200,189.12 = 487,738.91 : x
  2. Step 2: Convert to fraction form
    869,703.93/1,200,189.12 = 487,738.91/x
  3. Step 3: Cross multiply
    869,703.93x = 1,200,189.12 × 487,738.91
  4. Step 4: Simplify right side
    869,703.93x = 585,378,936,183.13
  5. Step 5: Solve for x
    x = 585,378,936,183.13/869,703.93
  6. Step 6: Final answer
    x = 673,078.41

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Double scale
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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.