Home / 778,536.36-1,073,775.69-491,951.88

Finding the Fourth Proportional to 778,536.36, 1,073,775.69 and 491,951.88

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Solution

The fourth proportional to 778,536.36, 1,073,775.69 and 491,951.88 is: 678,511.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,536.36 : 1,073,775.69 = 491,951.88 : x
  2. Step 2: Convert to fraction form
    778,536.36/1,073,775.69 = 491,951.88/x
  3. Step 3: Cross multiply
    778,536.36x = 1,073,775.69 × 491,951.88
  4. Step 4: Simplify right side
    778,536.36x = 528,245,969,393.80
  5. Step 5: Solve for x
    x = 528,245,969,393.80/778,536.36
  6. Step 6: Final answer
    x = 678,511.62

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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.