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Finding the Fourth Proportional to 442,887.40, 663,650.70 and 330,038.20

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Solution

The fourth proportional to 442,887.40, 663,650.70 and 330,038.20 is: 494,550.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,887.40 : 663,650.70 = 330,038.20 : x
  2. Step 2: Convert to fraction form
    442,887.40/663,650.70 = 330,038.20/x
  3. Step 3: Cross multiply
    442,887.40x = 663,650.70 × 330,038.20
  4. Step 4: Simplify right side
    442,887.40x = 219,030,082,456.74
  5. Step 5: Solve for x
    x = 219,030,082,456.74/442,887.40
  6. Step 6: Final answer
    x = 494,550.27

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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.