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Finding the Fourth Proportional to 529,621.62, 730,881.27 and 287,906.28

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Solution

The fourth proportional to 529,621.62, 730,881.27 and 287,906.28 is: 397,312.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,621.62 : 730,881.27 = 287,906.28 : x
  2. Step 2: Convert to fraction form
    529,621.62/730,881.27 = 287,906.28/x
  3. Step 3: Cross multiply
    529,621.62x = 730,881.27 × 287,906.28
  4. Step 4: Simplify right side
    529,621.62x = 210,425,307,567.38
  5. Step 5: Solve for x
    x = 210,425,307,567.38/529,621.62
  6. Step 6: Final answer
    x = 397,312.53

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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.