Home / 712,200.96-982,848.96-389,905.68

Finding the Fourth Proportional to 712,200.96, 982,848.96 and 389,905.68

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Solution

The fourth proportional to 712,200.96, 982,848.96 and 389,905.68 is: 538,076.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,200.96 : 982,848.96 = 389,905.68 : x
  2. Step 2: Convert to fraction form
    712,200.96/982,848.96 = 389,905.68/x
  3. Step 3: Cross multiply
    712,200.96x = 982,848.96 × 389,905.68
  4. Step 4: Simplify right side
    712,200.96x = 383,218,392,086.09
  5. Step 5: Solve for x
    x = 383,218,392,086.09/712,200.96
  6. Step 6: Final answer
    x = 538,076.21

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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.