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Finding the Fourth Proportional to 1,292,829.27, 1,784,185.43 and 712,052.28

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Solution

The fourth proportional to 1,292,829.27, 1,784,185.43 and 712,052.28 is: 982,676.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,829.27 : 1,784,185.43 = 712,052.28 : x
  2. Step 2: Convert to fraction form
    1,292,829.27/1,784,185.43 = 712,052.28/x
  3. Step 3: Cross multiply
    1,292,829.27x = 1,784,185.43 × 712,052.28
  4. Step 4: Simplify right side
    1,292,829.27x = 1,270,433,307,834.74
  5. Step 5: Solve for x
    x = 1,270,433,307,834.74/1,292,829.27
  6. Step 6: Final answer
    x = 982,676.78

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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.