Home / 1,211,449.30-1,671,802.41-728,021.86

Finding the Fourth Proportional to 1,211,449.30, 1,671,802.41 and 728,021.86

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Solution

The fourth proportional to 1,211,449.30, 1,671,802.41 and 728,021.86 is: 1,004,671.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,449.30 : 1,671,802.41 = 728,021.86 : x
  2. Step 2: Convert to fraction form
    1,211,449.30/1,671,802.41 = 728,021.86/x
  3. Step 3: Cross multiply
    1,211,449.30x = 1,671,802.41 × 728,021.86
  4. Step 4: Simplify right side
    1,211,449.30x = 1,217,108,700,080.68
  5. Step 5: Solve for x
    x = 1,217,108,700,080.68/1,211,449.30
  6. Step 6: Final answer
    x = 1,004,671.59

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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.