Home / 728,210.70-1,004,519.26-455,805.68

Finding the Fourth Proportional to 728,210.70, 1,004,519.26 and 455,805.68

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Solution

The fourth proportional to 728,210.70, 1,004,519.26 and 455,805.68 is: 628,754.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,210.70 : 1,004,519.26 = 455,805.68 : x
  2. Step 2: Convert to fraction form
    728,210.70/1,004,519.26 = 455,805.68/x
  3. Step 3: Cross multiply
    728,210.70x = 1,004,519.26 × 455,805.68
  4. Step 4: Simplify right side
    728,210.70x = 457,865,584,377.40
  5. Step 5: Solve for x
    x = 457,865,584,377.40/728,210.70
  6. Step 6: Final answer
    x = 628,754.27

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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.