Home / 728,958.32-1,005,962.91-406,668.41

Finding the Fourth Proportional to 728,958.32, 1,005,962.91 and 406,668.41

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Solution

The fourth proportional to 728,958.32, 1,005,962.91 and 406,668.41 is: 561,202.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,958.32 : 1,005,962.91 = 406,668.41 : x
  2. Step 2: Convert to fraction form
    728,958.32/1,005,962.91 = 406,668.41/x
  3. Step 3: Cross multiply
    728,958.32x = 1,005,962.91 × 406,668.41
  4. Step 4: Simplify right side
    728,958.32x = 409,093,337,128.67
  5. Step 5: Solve for x
    x = 409,093,337,128.67/728,958.32
  6. Step 6: Final answer
    x = 561,202.64

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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.