Home / 712,257.42-982,876.30-389,905.17

Finding the Fourth Proportional to 712,257.42, 982,876.30 and 389,905.17

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Solution

The fourth proportional to 712,257.42, 982,876.30 and 389,905.17 is: 538,047.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,257.42 : 982,876.30 = 389,905.17 : x
  2. Step 2: Convert to fraction form
    712,257.42/982,876.30 = 389,905.17/x
  3. Step 3: Cross multiply
    712,257.42x = 982,876.30 × 389,905.17
  4. Step 4: Simplify right side
    712,257.42x = 383,228,550,840.47
  5. Step 5: Solve for x
    x = 383,228,550,840.47/712,257.42
  6. Step 6: Final answer
    x = 538,047.82

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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.