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Finding the Fourth Proportional to 603,422.01, 903,755.20 and 288,100.35

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Solution

The fourth proportional to 603,422.01, 903,755.20 and 288,100.35 is: 431,492.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,422.01 : 903,755.20 = 288,100.35 : x
  2. Step 2: Convert to fraction form
    603,422.01/903,755.20 = 288,100.35/x
  3. Step 3: Cross multiply
    603,422.01x = 903,755.20 × 288,100.35
  4. Step 4: Simplify right side
    603,422.01x = 260,372,184,195.29
  5. Step 5: Solve for x
    x = 260,372,184,195.29/603,422.01
  6. Step 6: Final answer
    x = 431,492.69

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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.