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Finding the Fourth Proportional to 603,806.10, 904,672.35 and 319,074.90

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Solution

The fourth proportional to 603,806.10, 904,672.35 and 319,074.90 is: 478,064.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,806.10 : 904,672.35 = 319,074.90 : x
  2. Step 2: Convert to fraction form
    603,806.10/904,672.35 = 319,074.90/x
  3. Step 3: Cross multiply
    603,806.10x = 904,672.35 × 319,074.90
  4. Step 4: Simplify right side
    603,806.10x = 288,658,239,609.02
  5. Step 5: Solve for x
    x = 288,658,239,609.02/603,806.10
  6. Step 6: Final answer
    x = 478,064.46

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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.