Home / 491,927.40-679,115.70-331,625.16

Finding the Fourth Proportional to 491,927.40, 679,115.70 and 331,625.16

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Solution

The fourth proportional to 491,927.40, 679,115.70 and 331,625.16 is: 457,815.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,927.40 : 679,115.70 = 331,625.16 : x
  2. Step 2: Convert to fraction form
    491,927.40/679,115.70 = 331,625.16/x
  3. Step 3: Cross multiply
    491,927.40x = 679,115.70 × 331,625.16
  4. Step 4: Simplify right side
    491,927.40x = 225,211,852,671.01
  5. Step 5: Solve for x
    x = 225,211,852,671.01/491,927.40
  6. Step 6: Final answer
    x = 457,815.22

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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.