Home / 717,486.36-990,131.07-395,196.44

Finding the Fourth Proportional to 717,486.36, 990,131.07 and 395,196.44

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Solution

The fourth proportional to 717,486.36, 990,131.07 and 395,196.44 is: 545,371.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,486.36 : 990,131.07 = 395,196.44 : x
  2. Step 2: Convert to fraction form
    717,486.36/990,131.07 = 395,196.44/x
  3. Step 3: Cross multiply
    717,486.36x = 990,131.07 × 395,196.44
  4. Step 4: Simplify right side
    717,486.36x = 391,296,275,548.48
  5. Step 5: Solve for x
    x = 391,296,275,548.48/717,486.36
  6. Step 6: Final answer
    x = 545,371.03

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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.