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Finding the Fourth Proportional to 529,054.74, 730,100.79 and 287,339.60

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Solution

The fourth proportional to 529,054.74, 730,100.79 and 287,339.60 is: 396,531.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,054.74 : 730,100.79 = 287,339.60 : x
  2. Step 2: Convert to fraction form
    529,054.74/730,100.79 = 287,339.60/x
  3. Step 3: Cross multiply
    529,054.74x = 730,100.79 × 287,339.60
  4. Step 4: Simplify right side
    529,054.74x = 209,786,870,783.54
  5. Step 5: Solve for x
    x = 209,786,870,783.54/529,054.74
  6. Step 6: Final answer
    x = 396,531.50

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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.