Home / 1,128,825.30-1,557,779.97-645,400.57

Finding the Fourth Proportional to 1,128,825.30, 1,557,779.97 and 645,400.57

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Solution

The fourth proportional to 1,128,825.30, 1,557,779.97 and 645,400.57 is: 890,653.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,825.30 : 1,557,779.97 = 645,400.57 : x
  2. Step 2: Convert to fraction form
    1,128,825.30/1,557,779.97 = 645,400.57/x
  3. Step 3: Cross multiply
    1,128,825.30x = 1,557,779.97 × 645,400.57
  4. Step 4: Simplify right side
    1,128,825.30x = 1,005,392,069,556.68
  5. Step 5: Solve for x
    x = 1,005,392,069,556.68/1,128,825.30
  6. Step 6: Final answer
    x = 890,653.38

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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.