Home / 7,180,997.76-9,909,765.61-3,917,812.78

Finding the Fourth Proportional to 7,180,997.76, 9,909,765.61 and 3,917,812.78

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Solution

The fourth proportional to 7,180,997.76, 9,909,765.61 and 3,917,812.78 is: 5,406,575.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180,997.76 : 9,909,765.61 = 3,917,812.78 : x
  2. Step 2: Convert to fraction form
    7,180,997.76/9,909,765.61 = 3,917,812.78/x
  3. Step 3: Cross multiply
    7,180,997.76x = 9,909,765.61 × 3,917,812.78
  4. Step 4: Simplify right side
    7,180,997.76x = 38,824,606,319,093.55
  5. Step 5: Solve for x
    x = 38,824,606,319,093.55/7,180,997.76
  6. Step 6: Final answer
    x = 5,406,575.47

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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.