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Finding the Fourth Proportional to 529,322.75, 730,468.10 and 287,605.94

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Solution

The fourth proportional to 529,322.75, 730,468.10 and 287,605.94 is: 396,897.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,322.75 : 730,468.10 = 287,605.94 : x
  2. Step 2: Convert to fraction form
    529,322.75/730,468.10 = 287,605.94/x
  3. Step 3: Cross multiply
    529,322.75x = 730,468.10 × 287,605.94
  4. Step 4: Simplify right side
    529,322.75x = 210,086,964,907.18
  5. Step 5: Solve for x
    x = 210,086,964,907.18/529,322.75
  6. Step 6: Final answer
    x = 396,897.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.