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Finding the Fourth Proportional to 3,936,713.20, 5,905,069.80 and 944,897.20

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Solution

The fourth proportional to 3,936,713.20, 5,905,069.80 and 944,897.20 is: 1,417,345.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936,713.20 : 5,905,069.80 = 944,897.20 : x
  2. Step 2: Convert to fraction form
    3,936,713.20/5,905,069.80 = 944,897.20/x
  3. Step 3: Cross multiply
    3,936,713.20x = 5,905,069.80 × 944,897.20
  4. Step 4: Simplify right side
    3,936,713.20x = 5,579,683,919,824.56
  5. Step 5: Solve for x
    x = 5,579,683,919,824.56/3,936,713.20
  6. Step 6: Final answer
    x = 1,417,345.80

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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.