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Finding the Fourth Proportional to 529,484.88, 730,689.15 and 287,768.04

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Solution

The fourth proportional to 529,484.88, 730,689.15 and 287,768.04 is: 397,119.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,484.88 : 730,689.15 = 287,768.04 : x
  2. Step 2: Convert to fraction form
    529,484.88/730,689.15 = 287,768.04/x
  3. Step 3: Cross multiply
    529,484.88x = 730,689.15 × 287,768.04
  4. Step 4: Simplify right side
    529,484.88x = 210,268,984,544.77
  5. Step 5: Solve for x
    x = 210,268,984,544.77/529,484.88
  6. Step 6: Final answer
    x = 397,119.90

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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.