Home / 492,276,713.12-679,551,040.32-306,729,404

Finding the Fourth Proportional to 492,276,713.12, 679,551,040.32 and 306,729,404

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Solution

The fourth proportional to 492,276,713.12, 679,551,040.32 and 306,729,404 is: 423,416,911.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,276,713.12 : 679,551,040.32 = 306,729,404 : x
  2. Step 2: Convert to fraction form
    492,276,713.12/679,551,040.32 = 306,729,404/x
  3. Step 3: Cross multiply
    492,276,713.12x = 679,551,040.32 × 306,729,404
  4. Step 4: Simplify right side
    492,276,713.12x = 208,438,285,584,933,600
  5. Step 5: Solve for x
    x = 208,438,285,584,933,600/492,276,713.12
  6. Step 6: Final answer
    x = 423,416,911.73

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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.