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Finding the Fourth Proportional to 8,671,609.80, 13,004,352.90 and 2,990,512.80

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Solution

The fourth proportional to 8,671,609.80, 13,004,352.90 and 2,990,512.80 is: 4,484,713.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,671,609.80 : 13,004,352.90 = 2,990,512.80 : x
  2. Step 2: Convert to fraction form
    8,671,609.80/13,004,352.90 = 2,990,512.80/x
  3. Step 3: Cross multiply
    8,671,609.80x = 13,004,352.90 × 2,990,512.80
  4. Step 4: Simplify right side
    8,671,609.80x = 38,889,683,803,167.12
  5. Step 5: Solve for x
    x = 38,889,683,803,167.12/8,671,609.80
  6. Step 6: Final answer
    x = 4,484,713.30

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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.