Home / 529,215.12-730,321.92-287,499.51

Finding the Fourth Proportional to 529,215.12, 730,321.92 and 287,499.51

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Solution

The fourth proportional to 529,215.12, 730,321.92 and 287,499.51 is: 396,752.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,215.12 : 730,321.92 = 287,499.51 : x
  2. Step 2: Convert to fraction form
    529,215.12/730,321.92 = 287,499.51/x
  3. Step 3: Cross multiply
    529,215.12x = 730,321.92 × 287,499.51
  4. Step 4: Simplify right side
    529,215.12x = 209,967,194,142.26
  5. Step 5: Solve for x
    x = 209,967,194,142.26/529,215.12
  6. Step 6: Final answer
    x = 396,752.07

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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.