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Finding the Fourth Proportional to 1,007,765.76, 1,511,861.87 and 333,808.90

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Solution

The fourth proportional to 1,007,765.76, 1,511,861.87 and 333,808.90 is: 500,783.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,765.76 : 1,511,861.87 = 333,808.90 : x
  2. Step 2: Convert to fraction form
    1,007,765.76/1,511,861.87 = 333,808.90/x
  3. Step 3: Cross multiply
    1,007,765.76x = 1,511,861.87 × 333,808.90
  4. Step 4: Simplify right side
    1,007,765.76x = 504,672,947,776.64
  5. Step 5: Solve for x
    x = 504,672,947,776.64/1,007,765.76
  6. Step 6: Final answer
    x = 500,783.98

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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.