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Finding the Fourth Proportional to 712,241.98, 982,855.22 and 389,889.79

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Solution

The fourth proportional to 712,241.98, 982,855.22 and 389,889.79 is: 538,026.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,241.98 : 982,855.22 = 389,889.79 : x
  2. Step 2: Convert to fraction form
    712,241.98/982,855.22 = 389,889.79/x
  3. Step 3: Cross multiply
    712,241.98x = 982,855.22 × 389,889.79
  4. Step 4: Simplify right side
    712,241.98x = 383,205,210,919.62
  5. Step 5: Solve for x
    x = 383,205,210,919.62/712,241.98
  6. Step 6: Final answer
    x = 538,026.71

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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.