Home / 712,199.72-982,835.84-389,930.28

Finding the Fourth Proportional to 712,199.72, 982,835.84 and 389,930.28

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Solution

The fourth proportional to 712,199.72, 982,835.84 and 389,930.28 is: 538,103.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,199.72 : 982,835.84 = 389,930.28 : x
  2. Step 2: Convert to fraction form
    712,199.72/982,835.84 = 389,930.28/x
  3. Step 3: Cross multiply
    712,199.72x = 982,835.84 × 389,930.28
  4. Step 4: Simplify right side
    712,199.72x = 383,237,454,285.24
  5. Step 5: Solve for x
    x = 383,237,454,285.24/712,199.72
  6. Step 6: Final answer
    x = 538,103.91

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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.