Home / 5,199,845.76-7,802,488.80-2,128,116.78

Finding the Fourth Proportional to 5,199,845.76, 7,802,488.80 and 2,128,116.78

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Solution

The fourth proportional to 5,199,845.76, 7,802,488.80 and 2,128,116.78 is: 3,193,288.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,199,845.76 : 7,802,488.80 = 2,128,116.78 : x
  2. Step 2: Convert to fraction form
    5,199,845.76/7,802,488.80 = 2,128,116.78/x
  3. Step 3: Cross multiply
    5,199,845.76x = 7,802,488.80 × 2,128,116.78
  4. Step 4: Simplify right side
    5,199,845.76x = 16,604,607,341,042.06
  5. Step 5: Solve for x
    x = 16,604,607,341,042.06/5,199,845.76
  6. Step 6: Final answer
    x = 3,193,288.44

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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.