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Finding the Fourth Proportional to 7,189,969.76, 9,919,076.64 and 4,133,535.20

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Solution

The fourth proportional to 7,189,969.76, 9,919,076.64 and 4,133,535.20 is: 5,702,506.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,189,969.76 : 9,919,076.64 = 4,133,535.20 : x
  2. Step 2: Convert to fraction form
    7,189,969.76/9,919,076.64 = 4,133,535.20/x
  3. Step 3: Cross multiply
    7,189,969.76x = 9,919,076.64 × 4,133,535.20
  4. Step 4: Simplify right side
    7,189,969.76x = 41,000,852,442,937.73
  5. Step 5: Solve for x
    x = 41,000,852,442,937.73/7,189,969.76
  6. Step 6: Final answer
    x = 5,702,506.94

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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.