Home / 319,319,611.52-478,975,218.24-76,980,571.52

Finding the Fourth Proportional to 319,319,611.52, 478,975,218.24 and 76,980,571.52

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Solution

The fourth proportional to 319,319,611.52, 478,975,218.24 and 76,980,571.52 is: 115,469,844.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,319,611.52 : 478,975,218.24 = 76,980,571.52 : x
  2. Step 2: Convert to fraction form
    319,319,611.52/478,975,218.24 = 76,980,571.52/x
  3. Step 3: Cross multiply
    319,319,611.52x = 478,975,218.24 × 76,980,571.52
  4. Step 4: Simplify right side
    319,319,611.52x = 36,871,786,044,031,928
  5. Step 5: Solve for x
    x = 36,871,786,044,031,928/319,319,611.52
  6. Step 6: Final answer
    x = 115,469,844.99

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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.