Home / 728,982.41-1,005,976.31-406,684.22

Finding the Fourth Proportional to 728,982.41, 1,005,976.31 and 406,684.22

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Solution

The fourth proportional to 728,982.41, 1,005,976.31 and 406,684.22 is: 561,213.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,982.41 : 1,005,976.31 = 406,684.22 : x
  2. Step 2: Convert to fraction form
    728,982.41/1,005,976.31 = 406,684.22/x
  3. Step 3: Cross multiply
    728,982.41x = 1,005,976.31 × 406,684.22
  4. Step 4: Simplify right side
    728,982.41x = 409,114,683,907.53
  5. Step 5: Solve for x
    x = 409,114,683,907.53/728,982.41
  6. Step 6: Final answer
    x = 561,213.39

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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.