Home / 712,102.21-982,700.97-389,812.52

Finding the Fourth Proportional to 712,102.21, 982,700.97 and 389,812.52

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Solution

The fourth proportional to 712,102.21, 982,700.97 and 389,812.52 is: 537,941.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,102.21 : 982,700.97 = 389,812.52 : x
  2. Step 2: Convert to fraction form
    712,102.21/982,700.97 = 389,812.52/x
  3. Step 3: Cross multiply
    712,102.21x = 982,700.97 × 389,812.52
  4. Step 4: Simplify right side
    712,102.21x = 383,069,141,522.14
  5. Step 5: Solve for x
    x = 383,069,141,522.14/712,102.21
  6. Step 6: Final answer
    x = 537,941.23

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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.