Home / 712,251.96-982,870.38-389,900.34

Finding the Fourth Proportional to 712,251.96, 982,870.38 and 389,900.34

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Solution

The fourth proportional to 712,251.96, 982,870.38 and 389,900.34 is: 538,042.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,251.96 : 982,870.38 = 389,900.34 : x
  2. Step 2: Convert to fraction form
    712,251.96/982,870.38 = 389,900.34/x
  3. Step 3: Cross multiply
    712,251.96x = 982,870.38 × 389,900.34
  4. Step 4: Simplify right side
    712,251.96x = 383,221,495,337.93
  5. Step 5: Solve for x
    x = 383,221,495,337.93/712,251.96
  6. Step 6: Final answer
    x = 538,042.04

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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.