Home / 712,199.08-982,846.38-389,903.68

Finding the Fourth Proportional to 712,199.08, 982,846.38 and 389,903.68

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Solution

The fourth proportional to 712,199.08, 982,846.38 and 389,903.68 is: 538,073.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,199.08 : 982,846.38 = 389,903.68 : x
  2. Step 2: Convert to fraction form
    712,199.08/982,846.38 = 389,903.68/x
  3. Step 3: Cross multiply
    712,199.08x = 982,846.38 × 389,903.68
  4. Step 4: Simplify right side
    712,199.08x = 383,215,420,436.68
  5. Step 5: Solve for x
    x = 383,215,420,436.68/712,199.08
  6. Step 6: Final answer
    x = 538,073.46

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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.