Home / 491,676,721.20-737,515,081.80-128,171,077.20

Finding the Fourth Proportional to 491,676,721.20, 737,515,081.80 and 128,171,077.20

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Solution

The fourth proportional to 491,676,721.20, 737,515,081.80 and 128,171,077.20 is: 192,256,615.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,676,721.20 : 737,515,081.80 = 128,171,077.20 : x
  2. Step 2: Convert to fraction form
    491,676,721.20/737,515,081.80 = 128,171,077.20/x
  3. Step 3: Cross multiply
    491,676,721.20x = 737,515,081.80 × 128,171,077.20
  4. Step 4: Simplify right side
    491,676,721.20x = 94,528,102,485,552,112
  5. Step 5: Solve for x
    x = 94,528,102,485,552,112/491,676,721.20
  6. Step 6: Final answer
    x = 192,256,615.80

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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.