Home / 1,171,136.70-1,615,545.47-712,391.58

Finding the Fourth Proportional to 1,171,136.70, 1,615,545.47 and 712,391.58

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Solution

The fourth proportional to 1,171,136.70, 1,615,545.47 and 712,391.58 is: 982,721.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171,136.70 : 1,615,545.47 = 712,391.58 : x
  2. Step 2: Convert to fraction form
    1,171,136.70/1,615,545.47 = 712,391.58/x
  3. Step 3: Cross multiply
    1,171,136.70x = 1,615,545.47 × 712,391.58
  4. Step 4: Simplify right side
    1,171,136.70x = 1,150,900,991,716.12
  5. Step 5: Solve for x
    x = 1,150,900,991,716.12/1,171,136.70
  6. Step 6: Final answer
    x = 982,721.31

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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.