Home / 1,557,128.20-2,148,833.46-878,059.96

Finding the Fourth Proportional to 1,557,128.20, 2,148,833.46 and 878,059.96

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Solution

The fourth proportional to 1,557,128.20, 2,148,833.46 and 878,059.96 is: 1,211,720.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557,128.20 : 2,148,833.46 = 878,059.96 : x
  2. Step 2: Convert to fraction form
    1,557,128.20/2,148,833.46 = 878,059.96/x
  3. Step 3: Cross multiply
    1,557,128.20x = 2,148,833.46 × 878,059.96
  4. Step 4: Simplify right side
    1,557,128.20x = 1,886,804,621,934.26
  5. Step 5: Solve for x
    x = 1,886,804,621,934.26/1,557,128.20
  6. Step 6: Final answer
    x = 1,211,720.80

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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.