Home / 756,128.78-1,043,448.12-411,979.04

Finding the Fourth Proportional to 756,128.78, 1,043,448.12 and 411,979.04

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Solution

The fourth proportional to 756,128.78, 1,043,448.12 and 411,979.04 is: 568,525.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,128.78 : 1,043,448.12 = 411,979.04 : x
  2. Step 2: Convert to fraction form
    756,128.78/1,043,448.12 = 411,979.04/x
  3. Step 3: Cross multiply
    756,128.78x = 1,043,448.12 × 411,979.04
  4. Step 4: Simplify right side
    756,128.78x = 429,878,749,550.16
  5. Step 5: Solve for x
    x = 429,878,749,550.16/756,128.78
  6. Step 6: Final answer
    x = 568,525.84

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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.