Home / 1,081,228.52-1,490,377.64-851,421.26

Finding the Fourth Proportional to 1,081,228.52, 1,490,377.64 and 851,421.26

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Solution

The fourth proportional to 1,081,228.52, 1,490,377.64 and 851,421.26 is: 1,173,608.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081,228.52 : 1,490,377.64 = 851,421.26 : x
  2. Step 2: Convert to fraction form
    1,081,228.52/1,490,377.64 = 851,421.26/x
  3. Step 3: Cross multiply
    1,081,228.52x = 1,490,377.64 × 851,421.26
  4. Step 4: Simplify right side
    1,081,228.52x = 1,268,939,208,124.63
  5. Step 5: Solve for x
    x = 1,268,939,208,124.63/1,081,228.52
  6. Step 6: Final answer
    x = 1,173,608.71

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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.