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Finding the Fourth Proportional to 488,954.40, 732,994.20 and 320,555.40

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Solution

The fourth proportional to 488,954.40, 732,994.20 and 320,555.40 is: 480,546.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,954.40 : 732,994.20 = 320,555.40 : x
  2. Step 2: Convert to fraction form
    488,954.40/732,994.20 = 320,555.40/x
  3. Step 3: Cross multiply
    488,954.40x = 732,994.20 × 320,555.40
  4. Step 4: Simplify right side
    488,954.40x = 234,965,248,978.68
  5. Step 5: Solve for x
    x = 234,965,248,978.68/488,954.40
  6. Step 6: Final answer
    x = 480,546.34

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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.