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Finding the Fourth Proportional to 544,709.60, 815,451.60 and 405,087.20

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Solution

The fourth proportional to 544,709.60, 815,451.60 and 405,087.20 is: 606,431.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,709.60 : 815,451.60 = 405,087.20 : x
  2. Step 2: Convert to fraction form
    544,709.60/815,451.60 = 405,087.20/x
  3. Step 3: Cross multiply
    544,709.60x = 815,451.60 × 405,087.20
  4. Step 4: Simplify right side
    544,709.60x = 330,329,005,379.52
  5. Step 5: Solve for x
    x = 330,329,005,379.52/544,709.60
  6. Step 6: Final answer
    x = 606,431.40

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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.