Home / 712,224.45-982,872.60-389,964.51

Finding the Fourth Proportional to 712,224.45, 982,872.60 and 389,964.51

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Solution

The fourth proportional to 712,224.45, 982,872.60 and 389,964.51 is: 538,152.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,224.45 : 982,872.60 = 389,964.51 : x
  2. Step 2: Convert to fraction form
    712,224.45/982,872.60 = 389,964.51/x
  3. Step 3: Cross multiply
    712,224.45x = 982,872.60 × 389,964.51
  4. Step 4: Simplify right side
    712,224.45x = 383,285,431,851.43
  5. Step 5: Solve for x
    x = 383,285,431,851.43/712,224.45
  6. Step 6: Final answer
    x = 538,152.59

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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.