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Finding the Fourth Proportional to 419,280,014.10, 628,920,021.15 and 419,280,014.10

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Solution

The fourth proportional to 419,280,014.10, 628,920,021.15 and 419,280,014.10 is: 628,920,021.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,280,014.10 : 628,920,021.15 = 419,280,014.10 : x
  2. Step 2: Convert to fraction form
    419,280,014.10/628,920,021.15 = 419,280,014.10/x
  3. Step 3: Cross multiply
    419,280,014.10x = 628,920,021.15 × 419,280,014.10
  4. Step 4: Simplify right side
    419,280,014.10x = 263,693,595,335,544,288
  5. Step 5: Solve for x
    x = 263,693,595,335,544,288/419,280,014.10
  6. Step 6: Final answer
    x = 628,920,021.15

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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.