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Finding the Fourth Proportional to 415,635.80, 623,453.70 and 364,314.20

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Solution

The fourth proportional to 415,635.80, 623,453.70 and 364,314.20 is: 546,471.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,635.80 : 623,453.70 = 364,314.20 : x
  2. Step 2: Convert to fraction form
    415,635.80/623,453.70 = 364,314.20/x
  3. Step 3: Cross multiply
    415,635.80x = 623,453.70 × 364,314.20
  4. Step 4: Simplify right side
    415,635.80x = 227,133,035,952.54
  5. Step 5: Solve for x
    x = 227,133,035,952.54/415,635.80
  6. Step 6: Final answer
    x = 546,471.30

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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.