Home / 759,995.10-1,048,785.46-420,465.78

Finding the Fourth Proportional to 759,995.10, 1,048,785.46 and 420,465.78

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Solution

The fourth proportional to 759,995.10, 1,048,785.46 and 420,465.78 is: 580,238.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,995.10 : 1,048,785.46 = 420,465.78 : x
  2. Step 2: Convert to fraction form
    759,995.10/1,048,785.46 = 420,465.78/x
  3. Step 3: Cross multiply
    759,995.10x = 1,048,785.46 × 420,465.78
  4. Step 4: Simplify right side
    759,995.10x = 440,978,396,491.56
  5. Step 5: Solve for x
    x = 440,978,396,491.56/759,995.10
  6. Step 6: Final answer
    x = 580,238.47

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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.