Home / 756,128.03-1,043,447.09-411,978.29

Finding the Fourth Proportional to 756,128.03, 1,043,447.09 and 411,978.29

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Solution

The fourth proportional to 756,128.03, 1,043,447.09 and 411,978.29 is: 568,524.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,128.03 : 1,043,447.09 = 411,978.29 : x
  2. Step 2: Convert to fraction form
    756,128.03/1,043,447.09 = 411,978.29/x
  3. Step 3: Cross multiply
    756,128.03x = 1,043,447.09 × 411,978.29
  4. Step 4: Simplify right side
    756,128.03x = 429,877,540,566.55
  5. Step 5: Solve for x
    x = 429,877,540,566.55/756,128.03
  6. Step 6: Final answer
    x = 568,524.81

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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.