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Finding the Fourth Proportional to 20,404,789.90, 30,607,184.85 and 20,404,789.90

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Solution

The fourth proportional to 20,404,789.90, 30,607,184.85 and 20,404,789.90 is: 30,607,184.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404,789.90 : 30,607,184.85 = 20,404,789.90 : x
  2. Step 2: Convert to fraction form
    20,404,789.90/30,607,184.85 = 20,404,789.90/x
  3. Step 3: Cross multiply
    20,404,789.90x = 30,607,184.85 × 20,404,789.90
  4. Step 4: Simplify right side
    20,404,789.90x = 624,533,176,294,713
  5. Step 5: Solve for x
    x = 624,533,176,294,713/20,404,789.90
  6. Step 6: Final answer
    x = 30,607,184.85

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1.5x scale

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.