Home / 1,428,177.40-1,970,884.65-816,343.24

Finding the Fourth Proportional to 1,428,177.40, 1,970,884.65 and 816,343.24

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Solution

The fourth proportional to 1,428,177.40, 1,970,884.65 and 816,343.24 is: 1,126,553.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,177.40 : 1,970,884.65 = 816,343.24 : x
  2. Step 2: Convert to fraction form
    1,428,177.40/1,970,884.65 = 816,343.24/x
  3. Step 3: Cross multiply
    1,428,177.40x = 1,970,884.65 × 816,343.24
  4. Step 4: Simplify right side
    1,428,177.40x = 1,608,918,360,847.27
  5. Step 5: Solve for x
    x = 1,608,918,360,847.27/1,428,177.40
  6. Step 6: Final answer
    x = 1,126,553.58

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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.