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Finding the Fourth Proportional to 7,905,481.03, 11,791,768.19 and 7,178,956.90

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Solution

The fourth proportional to 7,905,481.03, 11,791,768.19 and 7,178,956.90 is: 10,708,089.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905,481.03 : 11,791,768.19 = 7,178,956.90 : x
  2. Step 2: Convert to fraction form
    7,905,481.03/11,791,768.19 = 7,178,956.90/x
  3. Step 3: Cross multiply
    7,905,481.03x = 11,791,768.19 × 7,178,956.90
  4. Step 4: Simplify right side
    7,905,481.03x = 84,652,595,545,426.81
  5. Step 5: Solve for x
    x = 84,652,595,545,426.81/7,905,481.03
  6. Step 6: Final answer
    x = 10,708,089.14

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.