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Finding the Fourth Proportional to 529,659.72, 730,921.68 and 287,948.34

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Solution

The fourth proportional to 529,659.72, 730,921.68 and 287,948.34 is: 397,363.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,659.72 : 730,921.68 = 287,948.34 : x
  2. Step 2: Convert to fraction form
    529,659.72/730,921.68 = 287,948.34/x
  3. Step 3: Cross multiply
    529,659.72x = 730,921.68 × 287,948.34
  4. Step 4: Simplify right side
    529,659.72x = 210,467,684,426.01
  5. Step 5: Solve for x
    x = 210,467,684,426.01/529,659.72
  6. Step 6: Final answer
    x = 397,363.96

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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.