Home / 725,336.10-1,085,930.55-445,400.10

Finding the Fourth Proportional to 725,336.10, 1,085,930.55 and 445,400.10

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Solution

The fourth proportional to 725,336.10, 1,085,930.55 and 445,400.10 is: 666,826.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,336.10 : 1,085,930.55 = 445,400.10 : x
  2. Step 2: Convert to fraction form
    725,336.10/1,085,930.55 = 445,400.10/x
  3. Step 3: Cross multiply
    725,336.10x = 1,085,930.55 × 445,400.10
  4. Step 4: Simplify right side
    725,336.10x = 483,673,575,563.06
  5. Step 5: Solve for x
    x = 483,673,575,563.06/725,336.10
  6. Step 6: Final answer
    x = 666,826.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.