Home / 712,110.71-982,712.70-389,821.02

Finding the Fourth Proportional to 712,110.71, 982,712.70 and 389,821.02

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Solution

The fourth proportional to 712,110.71, 982,712.70 and 389,821.02 is: 537,952.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,110.71 : 982,712.70 = 389,821.02 : x
  2. Step 2: Convert to fraction form
    712,110.71/982,712.70 = 389,821.02/x
  3. Step 3: Cross multiply
    712,110.71x = 982,712.70 × 389,821.02
  4. Step 4: Simplify right side
    712,110.71x = 383,082,067,080.95
  5. Step 5: Solve for x
    x = 383,082,067,080.95/712,110.71
  6. Step 6: Final answer
    x = 537,952.97

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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.