Home / 492,276,831.11-679,551,202.10-306,729,520.37

Finding the Fourth Proportional to 492,276,831.11, 679,551,202.10 and 306,729,520.37

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Solution

The fourth proportional to 492,276,831.11, 679,551,202.10 and 306,729,520.37 is: 423,417,071.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,276,831.11 : 679,551,202.10 = 306,729,520.37 : x
  2. Step 2: Convert to fraction form
    492,276,831.11/679,551,202.10 = 306,729,520.37/x
  3. Step 3: Cross multiply
    492,276,831.11x = 679,551,202.10 × 306,729,520.37
  4. Step 4: Simplify right side
    492,276,831.11x = 208,438,414,284,359,008
  5. Step 5: Solve for x
    x = 208,438,414,284,359,008/492,276,831.11
  6. Step 6: Final answer
    x = 423,417,071.68

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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.