Home / 1,080,030.96-1,490,380.97-644,939.27

Finding the Fourth Proportional to 1,080,030.96, 1,490,380.97 and 644,939.27

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Solution

The fourth proportional to 1,080,030.96, 1,490,380.97 and 644,939.27 is: 889,979.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080,030.96 : 1,490,380.97 = 644,939.27 : x
  2. Step 2: Convert to fraction form
    1,080,030.96/1,490,380.97 = 644,939.27/x
  3. Step 3: Cross multiply
    1,080,030.96x = 1,490,380.97 × 644,939.27
  4. Step 4: Simplify right side
    1,080,030.96x = 961,205,214,813.69
  5. Step 5: Solve for x
    x = 961,205,214,813.69/1,080,030.96
  6. Step 6: Final answer
    x = 889,979.32

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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.