Home / 728,479.44-1,005,297.48-406,193.40

Finding the Fourth Proportional to 728,479.44, 1,005,297.48 and 406,193.40

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Solution

The fourth proportional to 728,479.44, 1,005,297.48 and 406,193.40 is: 560,544.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,479.44 : 1,005,297.48 = 406,193.40 : x
  2. Step 2: Convert to fraction form
    728,479.44/1,005,297.48 = 406,193.40/x
  3. Step 3: Cross multiply
    728,479.44x = 1,005,297.48 × 406,193.40
  4. Step 4: Simplify right side
    728,479.44x = 408,345,201,412.63
  5. Step 5: Solve for x
    x = 408,345,201,412.63/728,479.44
  6. Step 6: Final answer
    x = 560,544.58

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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.