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Finding the Fourth Proportional to 768,994.60, 1,153,905.02 and 320,025

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Solution

The fourth proportional to 768,994.60, 1,153,905.02 and 320,025 is: 480,209.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,994.60 : 1,153,905.02 = 320,025 : x
  2. Step 2: Convert to fraction form
    768,994.60/1,153,905.02 = 320,025/x
  3. Step 3: Cross multiply
    768,994.60x = 1,153,905.02 × 320,025
  4. Step 4: Simplify right side
    768,994.60x = 369,278,454,025.50
  5. Step 5: Solve for x
    x = 369,278,454,025.50/768,994.60
  6. Step 6: Final answer
    x = 480,209.42

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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.