Home / 712,165.46-982,786.64-389,875.46

Finding the Fourth Proportional to 712,165.46, 982,786.64 and 389,875.46

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Solution

The fourth proportional to 712,165.46, 982,786.64 and 389,875.46 is: 538,027.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,165.46 : 982,786.64 = 389,875.46 : x
  2. Step 2: Convert to fraction form
    712,165.46/982,786.64 = 389,875.46/x
  3. Step 3: Cross multiply
    712,165.46x = 982,786.64 × 389,875.46
  4. Step 4: Simplify right side
    712,165.46x = 383,164,393,351.85
  5. Step 5: Solve for x
    x = 383,164,393,351.85/712,165.46
  6. Step 6: Final answer
    x = 538,027.21

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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.