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Finding the Fourth Proportional to 529,361.03, 730,522.60 and 287,643.60

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Solution

The fourth proportional to 529,361.03, 730,522.60 and 287,643.60 is: 396,950.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,361.03 : 730,522.60 = 287,643.60 : x
  2. Step 2: Convert to fraction form
    529,361.03/730,522.60 = 287,643.60/x
  3. Step 3: Cross multiply
    529,361.03x = 730,522.60 × 287,643.60
  4. Step 4: Simplify right side
    529,361.03x = 210,130,151,624.03
  5. Step 5: Solve for x
    x = 210,130,151,624.03/529,361.03
  6. Step 6: Final answer
    x = 396,950.55

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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.