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Finding the Fourth Proportional to 529,792.80, 731,103.72 and 288,073.26

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Solution

The fourth proportional to 529,792.80, 731,103.72 and 288,073.26 is: 397,535.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,792.80 : 731,103.72 = 288,073.26 : x
  2. Step 2: Convert to fraction form
    529,792.80/731,103.72 = 288,073.26/x
  3. Step 3: Cross multiply
    529,792.80x = 731,103.72 × 288,073.26
  4. Step 4: Simplify right side
    529,792.80x = 210,611,432,018.53
  5. Step 5: Solve for x
    x = 210,611,432,018.53/529,792.80
  6. Step 6: Final answer
    x = 397,535.47

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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.