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Finding the Fourth Proportional to 409,200,515.10, 613,800,772.65 and 409,200,515.10

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Solution

The fourth proportional to 409,200,515.10, 613,800,772.65 and 409,200,515.10 is: 613,800,772.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,200,515.10 : 613,800,772.65 = 409,200,515.10 : x
  2. Step 2: Convert to fraction form
    409,200,515.10/613,800,772.65 = 409,200,515.10/x
  3. Step 3: Cross multiply
    409,200,515.10x = 613,800,772.65 × 409,200,515.10
  4. Step 4: Simplify right side
    409,200,515.10x = 251,167,592,337,157,984
  5. Step 5: Solve for x
    x = 251,167,592,337,157,984/409,200,515.10
  6. Step 6: Final answer
    x = 613,800,772.65

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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.