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Finding the Fourth Proportional to 529,460.66, 730,660.30 and 287,743.28

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Solution

The fourth proportional to 529,460.66, 730,660.30 and 287,743.28 is: 397,088.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,460.66 : 730,660.30 = 287,743.28 : x
  2. Step 2: Convert to fraction form
    529,460.66/730,660.30 = 287,743.28/x
  3. Step 3: Cross multiply
    529,460.66x = 730,660.30 × 287,743.28
  4. Step 4: Simplify right side
    529,460.66x = 210,242,591,287.78
  5. Step 5: Solve for x
    x = 210,242,591,287.78/529,460.66
  6. Step 6: Final answer
    x = 397,088.22

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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.