Home / 712,097.28-982,664.64-389,799.36

Finding the Fourth Proportional to 712,097.28, 982,664.64 and 389,799.36

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Solution

The fourth proportional to 712,097.28, 982,664.64 and 389,799.36 is: 537,906.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,097.28 : 982,664.64 = 389,799.36 : x
  2. Step 2: Convert to fraction form
    712,097.28/982,664.64 = 389,799.36/x
  3. Step 3: Cross multiply
    712,097.28x = 982,664.64 × 389,799.36
  4. Step 4: Simplify right side
    712,097.28x = 383,042,047,766.63
  5. Step 5: Solve for x
    x = 383,042,047,766.63/712,097.28
  6. Step 6: Final answer
    x = 537,906.91

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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.