Home / 757,180.85-1,045,022.72-485,555.45

Finding the Fourth Proportional to 757,180.85, 1,045,022.72 and 485,555.45

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Solution

The fourth proportional to 757,180.85, 1,045,022.72 and 485,555.45 is: 670,139.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    757,180.85 : 1,045,022.72 = 485,555.45 : x
  2. Step 2: Convert to fraction form
    757,180.85/1,045,022.72 = 485,555.45/x
  3. Step 3: Cross multiply
    757,180.85x = 1,045,022.72 × 485,555.45
  4. Step 4: Simplify right side
    757,180.85x = 507,416,469,416.93
  5. Step 5: Solve for x
    x = 507,416,469,416.93/757,180.85
  6. Step 6: Final answer
    x = 670,139.07

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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.