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Finding the Fourth Proportional to 664,353.20, 996,967.20 and 380,043.20

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Solution

The fourth proportional to 664,353.20, 996,967.20 and 380,043.20 is: 570,315.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,353.20 : 996,967.20 = 380,043.20 : x
  2. Step 2: Convert to fraction form
    664,353.20/996,967.20 = 380,043.20/x
  3. Step 3: Cross multiply
    664,353.20x = 996,967.20 × 380,043.20
  4. Step 4: Simplify right side
    664,353.20x = 378,890,604,983.04
  5. Step 5: Solve for x
    x = 378,890,604,983.04/664,353.20
  6. Step 6: Final answer
    x = 570,315.01

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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.