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Finding the Fourth Proportional to 6,664,810.80, 10,001,881.80 and 2,881,009.20

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Solution

The fourth proportional to 6,664,810.80, 10,001,881.80 and 2,881,009.20 is: 4,323,530.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,664,810.80 : 10,001,881.80 = 2,881,009.20 : x
  2. Step 2: Convert to fraction form
    6,664,810.80/10,001,881.80 = 2,881,009.20/x
  3. Step 3: Cross multiply
    6,664,810.80x = 10,001,881.80 × 2,881,009.20
  4. Step 4: Simplify right side
    6,664,810.80x = 28,815,513,483,112.56
  5. Step 5: Solve for x
    x = 28,815,513,483,112.56/6,664,810.80
  6. Step 6: Final answer
    x = 4,323,530.61

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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.