Home / 494,148.53-681,998.10-312,877.28

Finding the Fourth Proportional to 494,148.53, 681,998.10 and 312,877.28

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Solution

The fourth proportional to 494,148.53, 681,998.10 and 312,877.28 is: 431,816.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,148.53 : 681,998.10 = 312,877.28 : x
  2. Step 2: Convert to fraction form
    494,148.53/681,998.10 = 312,877.28/x
  3. Step 3: Cross multiply
    494,148.53x = 681,998.10 × 312,877.28
  4. Step 4: Simplify right side
    494,148.53x = 213,381,710,493.17
  5. Step 5: Solve for x
    x = 213,381,710,493.17/494,148.53
  6. Step 6: Final answer
    x = 431,816.95

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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.