Home / 712,101.96-982,700.63-389,812.27

Finding the Fourth Proportional to 712,101.96, 982,700.63 and 389,812.27

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Solution

The fourth proportional to 712,101.96, 982,700.63 and 389,812.27 is: 537,940.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,101.96 : 982,700.63 = 389,812.27 : x
  2. Step 2: Convert to fraction form
    712,101.96/982,700.63 = 389,812.27/x
  3. Step 3: Cross multiply
    712,101.96x = 982,700.63 × 389,812.27
  4. Step 4: Simplify right side
    712,101.96x = 383,068,761,361.67
  5. Step 5: Solve for x
    x = 383,068,761,361.67/712,101.96
  6. Step 6: Final answer
    x = 537,940.89

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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.