Home / 7,210,104.78-9,949,971.96-3,947,223.09

Finding the Fourth Proportional to 7,210,104.78, 9,949,971.96 and 3,947,223.09

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Solution

The fourth proportional to 7,210,104.78, 9,949,971.96 and 3,947,223.09 is: 5,447,182.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,210,104.78 : 9,949,971.96 = 3,947,223.09 : x
  2. Step 2: Convert to fraction form
    7,210,104.78/9,949,971.96 = 3,947,223.09/x
  3. Step 3: Cross multiply
    7,210,104.78x = 9,949,971.96 × 3,947,223.09
  4. Step 4: Simplify right side
    7,210,104.78x = 39,274,759,065,364.55
  5. Step 5: Solve for x
    x = 39,274,759,065,364.55/7,210,104.78
  6. Step 6: Final answer
    x = 5,447,182.84

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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.