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Finding the Fourth Proportional to 521,656.19, 782,775.03 and 281,765.25

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Solution

The fourth proportional to 521,656.19, 782,775.03 and 281,765.25 is: 422,804.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,656.19 : 782,775.03 = 281,765.25 : x
  2. Step 2: Convert to fraction form
    521,656.19/782,775.03 = 281,765.25/x
  3. Step 3: Cross multiply
    521,656.19x = 782,775.03 × 281,765.25
  4. Step 4: Simplify right side
    521,656.19x = 220,558,800,612.88
  5. Step 5: Solve for x
    x = 220,558,800,612.88/521,656.19
  6. Step 6: Final answer
    x = 422,804.91

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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.