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Finding the Fourth Proportional to 8,668,819.80, 13,007,117.70 and 2,993,117.40

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Solution

The fourth proportional to 8,668,819.80, 13,007,117.70 and 2,993,117.40 is: 4,491,018.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668,819.80 : 13,007,117.70 = 2,993,117.40 : x
  2. Step 2: Convert to fraction form
    8,668,819.80/13,007,117.70 = 2,993,117.40/x
  3. Step 3: Cross multiply
    8,668,819.80x = 13,007,117.70 × 2,993,117.40
  4. Step 4: Simplify right side
    8,668,819.80x = 38,931,830,311,717.98
  5. Step 5: Solve for x
    x = 38,931,830,311,717.98/8,668,819.80
  6. Step 6: Final answer
    x = 4,491,018.53

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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.