Home / 712,173.51-982,821.60-389,913.66

Finding the Fourth Proportional to 712,173.51, 982,821.60 and 389,913.66

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Solution

The fourth proportional to 712,173.51, 982,821.60 and 389,913.66 is: 538,092.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,173.51 : 982,821.60 = 389,913.66 : x
  2. Step 2: Convert to fraction form
    712,173.51/982,821.60 = 389,913.66/x
  3. Step 3: Cross multiply
    712,173.51x = 982,821.60 × 389,913.66
  4. Step 4: Simplify right side
    712,173.51x = 383,215,567,183.06
  5. Step 5: Solve for x
    x = 383,215,567,183.06/712,173.51
  6. Step 6: Final answer
    x = 538,092.98

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1.5x scale

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.