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Finding the Fourth Proportional to 529,338.08, 730,491 and 287,620.66

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Solution

The fourth proportional to 529,338.08, 730,491 and 287,620.66 is: 396,918.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,338.08 : 730,491 = 287,620.66 : x
  2. Step 2: Convert to fraction form
    529,338.08/730,491 = 287,620.66/x
  3. Step 3: Cross multiply
    529,338.08x = 730,491 × 287,620.66
  4. Step 4: Simplify right side
    529,338.08x = 210,104,303,544.06
  5. Step 5: Solve for x
    x = 210,104,303,544.06/529,338.08
  6. Step 6: Final answer
    x = 396,918.93

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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.