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Finding the Fourth Proportional to 12,477,780, 18,716,670 and 4,499,604

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Solution

The fourth proportional to 12,477,780, 18,716,670 and 4,499,604 is: 6,749,406

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,477,780 : 18,716,670 = 4,499,604 : x
  2. Step 2: Convert to fraction form
    12,477,780/18,716,670 = 4,499,604/x
  3. Step 3: Cross multiply
    12,477,780x = 18,716,670 × 4,499,604
  4. Step 4: Simplify right side
    12,477,780x = 84,217,603,198,680
  5. Step 5: Solve for x
    x = 84,217,603,198,680/12,477,780
  6. Step 6: Final answer
    x = 6,749,406

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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.