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Finding the Fourth Proportional to 529,659.28, 730,921.08 and 287,947.84

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Solution

The fourth proportional to 529,659.28, 730,921.08 and 287,947.84 is: 397,363.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,659.28 : 730,921.08 = 287,947.84 : x
  2. Step 2: Convert to fraction form
    529,659.28/730,921.08 = 287,947.84/x
  3. Step 3: Cross multiply
    529,659.28x = 730,921.08 × 287,947.84
  4. Step 4: Simplify right side
    529,659.28x = 210,467,146,196.47
  5. Step 5: Solve for x
    x = 210,467,146,196.47/529,659.28
  6. Step 6: Final answer
    x = 397,363.28

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1.5x scale

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.