Home / 660,729,740.56-990,882,447.54-217,972,902.76

Finding the Fourth Proportional to 660,729,740.56, 990,882,447.54 and 217,972,902.76

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Solution

The fourth proportional to 660,729,740.56, 990,882,447.54 and 217,972,902.76 is: 326,889,362.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,729,740.56 : 990,882,447.54 = 217,972,902.76 : x
  2. Step 2: Convert to fraction form
    660,729,740.56/990,882,447.54 = 217,972,902.76/x
  3. Step 3: Cross multiply
    660,729,740.56x = 990,882,447.54 × 217,972,902.76
  4. Step 4: Simplify right side
    660,729,740.56x = 215,985,523,384,227,200
  5. Step 5: Solve for x
    x = 215,985,523,384,227,200/660,729,740.56
  6. Step 6: Final answer
    x = 326,889,362.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.