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Finding the Fourth Proportional to 525,090.60, 788,219.10 and 325,636.20

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Solution

The fourth proportional to 525,090.60, 788,219.10 and 325,636.20 is: 488,815.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,090.60 : 788,219.10 = 325,636.20 : x
  2. Step 2: Convert to fraction form
    525,090.60/788,219.10 = 325,636.20/x
  3. Step 3: Cross multiply
    525,090.60x = 788,219.10 × 325,636.20
  4. Step 4: Simplify right side
    525,090.60x = 256,672,672,491.42
  5. Step 5: Solve for x
    x = 256,672,672,491.42/525,090.60
  6. Step 6: Final answer
    x = 488,815.97

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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.