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Finding the Fourth Proportional to 603,959.40, 904,902.30 and 287,735.40

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Solution

The fourth proportional to 603,959.40, 904,902.30 and 287,735.40 is: 431,109.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,959.40 : 904,902.30 = 287,735.40 : x
  2. Step 2: Convert to fraction form
    603,959.40/904,902.30 = 287,735.40/x
  3. Step 3: Cross multiply
    603,959.40x = 904,902.30 × 287,735.40
  4. Step 4: Simplify right side
    603,959.40x = 260,372,425,251.42
  5. Step 5: Solve for x
    x = 260,372,425,251.42/603,959.40
  6. Step 6: Final answer
    x = 431,109.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.