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Finding the Fourth Proportional to 7,187,803.52, 9,919,106.30 and 3,924,602.69

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Solution

The fourth proportional to 7,187,803.52, 9,919,106.30 and 3,924,602.69 is: 5,415,917.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,187,803.52 : 9,919,106.30 = 3,924,602.69 : x
  2. Step 2: Convert to fraction form
    7,187,803.52/9,919,106.30 = 3,924,602.69/x
  3. Step 3: Cross multiply
    7,187,803.52x = 9,919,106.30 × 3,924,602.69
  4. Step 4: Simplify right side
    7,187,803.52x = 38,928,551,227,591.92
  5. Step 5: Solve for x
    x = 38,928,551,227,591.92/7,187,803.52
  6. Step 6: Final answer
    x = 5,415,917.55

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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.