Home / 712,282.08-982,911.60-389,930.40

Finding the Fourth Proportional to 712,282.08, 982,911.60 and 389,930.40

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Solution

The fourth proportional to 712,282.08, 982,911.60 and 389,930.40 is: 538,083.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,282.08 : 982,911.60 = 389,930.40 : x
  2. Step 2: Convert to fraction form
    712,282.08/982,911.60 = 389,930.40/x
  3. Step 3: Cross multiply
    712,282.08x = 982,911.60 × 389,930.40
  4. Step 4: Simplify right side
    712,282.08x = 383,267,113,352.64
  5. Step 5: Solve for x
    x = 383,267,113,352.64/712,282.08
  6. Step 6: Final answer
    x = 538,083.33

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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.