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Finding the Fourth Proportional to 7,209,881.28, 9,948,955.68 and 4,308,694.56

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Solution

The fourth proportional to 7,209,881.28, 9,948,955.68 and 4,308,694.56 is: 5,945,591.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,209,881.28 : 9,948,955.68 = 4,308,694.56 : x
  2. Step 2: Convert to fraction form
    7,209,881.28/9,948,955.68 = 4,308,694.56/x
  3. Step 3: Cross multiply
    7,209,881.28x = 9,948,955.68 × 4,308,694.56
  4. Step 4: Simplify right side
    7,209,881.28x = 42,867,011,216,097.09
  5. Step 5: Solve for x
    x = 42,867,011,216,097.09/7,209,881.28
  6. Step 6: Final answer
    x = 5,945,591.83

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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.