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Finding the Fourth Proportional to 488,970.40, 733,455.60 and 321,008.80

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Solution

The fourth proportional to 488,970.40, 733,455.60 and 321,008.80 is: 481,513.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,970.40 : 733,455.60 = 321,008.80 : x
  2. Step 2: Convert to fraction form
    488,970.40/733,455.60 = 321,008.80/x
  3. Step 3: Cross multiply
    488,970.40x = 733,455.60 × 321,008.80
  4. Step 4: Simplify right side
    488,970.40x = 235,445,702,009.28
  5. Step 5: Solve for x
    x = 235,445,702,009.28/488,970.40
  6. Step 6: Final answer
    x = 481,513.20

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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.