Home / 1,586,888.47-2,189,921.97-861,742.45

Finding the Fourth Proportional to 1,586,888.47, 2,189,921.97 and 861,742.45

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Solution

The fourth proportional to 1,586,888.47, 2,189,921.97 and 861,742.45 is: 1,189,213.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,586,888.47 : 2,189,921.97 = 861,742.45 : x
  2. Step 2: Convert to fraction form
    1,586,888.47/2,189,921.97 = 861,742.45/x
  3. Step 3: Cross multiply
    1,586,888.47x = 2,189,921.97 × 861,742.45
  4. Step 4: Simplify right side
    1,586,888.47x = 1,887,148,723,736.63
  5. Step 5: Solve for x
    x = 1,887,148,723,736.63/1,586,888.47
  6. Step 6: Final answer
    x = 1,189,213.21

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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.