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Finding the Fourth Proportional to 1,315,584.94, 1,815,507.19 and 711,972.94

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Solution

The fourth proportional to 1,315,584.94, 1,815,507.19 and 711,972.94 is: 982,522.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,584.94 : 1,815,507.19 = 711,972.94 : x
  2. Step 2: Convert to fraction form
    1,315,584.94/1,815,507.19 = 711,972.94/x
  3. Step 3: Cross multiply
    1,315,584.94x = 1,815,507.19 × 711,972.94
  4. Step 4: Simplify right side
    1,315,584.94x = 1,292,591,991,655.44
  5. Step 5: Solve for x
    x = 1,292,591,991,655.44/1,315,584.94
  6. Step 6: Final answer
    x = 982,522.64

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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.