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Finding the Fourth Proportional to 712,196.24, 982,831 and 389,926.80

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Solution

The fourth proportional to 712,196.24, 982,831 and 389,926.80 is: 538,099.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,196.24 : 982,831 = 389,926.80 : x
  2. Step 2: Convert to fraction form
    712,196.24/982,831 = 389,926.80/x
  3. Step 3: Cross multiply
    712,196.24x = 982,831 × 389,926.80
  4. Step 4: Simplify right side
    712,196.24x = 383,232,146,770.80
  5. Step 5: Solve for x
    x = 383,232,146,770.80/712,196.24
  6. Step 6: Final answer
    x = 538,099.09

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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.