Home / 1,097,175.40-1,514,406.39-638,378.59

Finding the Fourth Proportional to 1,097,175.40, 1,514,406.39 and 638,378.59

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Solution

The fourth proportional to 1,097,175.40, 1,514,406.39 and 638,378.59 is: 881,139.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,097,175.40 : 1,514,406.39 = 638,378.59 : x
  2. Step 2: Convert to fraction form
    1,097,175.40/1,514,406.39 = 638,378.59/x
  3. Step 3: Cross multiply
    1,097,175.40x = 1,514,406.39 × 638,378.59
  4. Step 4: Simplify right side
    1,097,175.40x = 966,764,616,185.65
  5. Step 5: Solve for x
    x = 966,764,616,185.65/1,097,175.40
  6. Step 6: Final answer
    x = 881,139.53

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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.