Home / 850,636.80-1,275,955.20-259,660.80

Finding the Fourth Proportional to 850,636.80, 1,275,955.20 and 259,660.80

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Solution

The fourth proportional to 850,636.80, 1,275,955.20 and 259,660.80 is: 389,491.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,636.80 : 1,275,955.20 = 259,660.80 : x
  2. Step 2: Convert to fraction form
    850,636.80/1,275,955.20 = 259,660.80/x
  3. Step 3: Cross multiply
    850,636.80x = 1,275,955.20 × 259,660.80
  4. Step 4: Simplify right side
    850,636.80x = 331,315,547,996.16
  5. Step 5: Solve for x
    x = 331,315,547,996.16/850,636.80
  6. Step 6: Final answer
    x = 389,491.20

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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.