Home / 529,680.47-730,973.46-287,979.71

Finding the Fourth Proportional to 529,680.47, 730,973.46 and 287,979.71

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Solution

The fourth proportional to 529,680.47, 730,973.46 and 287,979.71 is: 397,419.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,680.47 : 730,973.46 = 287,979.71 : x
  2. Step 2: Convert to fraction form
    529,680.47/730,973.46 = 287,979.71/x
  3. Step 3: Cross multiply
    529,680.47x = 730,973.46 × 287,979.71
  4. Step 4: Simplify right side
    529,680.47x = 210,505,522,453.55
  5. Step 5: Solve for x
    x = 210,505,522,453.55/529,680.47
  6. Step 6: Final answer
    x = 397,419.83

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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.