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Finding the Fourth Proportional to 529,632.48, 730,884.21 and 287,921.13

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Solution

The fourth proportional to 529,632.48, 730,884.21 and 287,921.13 is: 397,326.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,632.48 : 730,884.21 = 287,921.13 : x
  2. Step 2: Convert to fraction form
    529,632.48/730,884.21 = 287,921.13/x
  3. Step 3: Cross multiply
    529,632.48x = 730,884.21 × 287,921.13
  4. Step 4: Simplify right side
    529,632.48x = 210,437,007,642.36
  5. Step 5: Solve for x
    x = 210,437,007,642.36/529,632.48
  6. Step 6: Final answer
    x = 397,326.48

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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.