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Finding the Fourth Proportional to 8,709,965.74, 13,064,104.39 and 2,644,750.78

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Solution

The fourth proportional to 8,709,965.74, 13,064,104.39 and 2,644,750.78 is: 3,966,869.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709,965.74 : 13,064,104.39 = 2,644,750.78 : x
  2. Step 2: Convert to fraction form
    8,709,965.74/13,064,104.39 = 2,644,750.78/x
  3. Step 3: Cross multiply
    8,709,965.74x = 13,064,104.39 × 2,644,750.78
  4. Step 4: Simplify right side
    8,709,965.74x = 34,551,300,241,140.69
  5. Step 5: Solve for x
    x = 34,551,300,241,140.69/8,709,965.74
  6. Step 6: Final answer
    x = 3,966,869.82

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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.