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Finding the Fourth Proportional to 604,219.18, 906,328.77 and 287,716.54

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Solution

The fourth proportional to 604,219.18, 906,328.77 and 287,716.54 is: 431,574.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,219.18 : 906,328.77 = 287,716.54 : x
  2. Step 2: Convert to fraction form
    604,219.18/906,328.77 = 287,716.54/x
  3. Step 3: Cross multiply
    604,219.18x = 906,328.77 × 287,716.54
  4. Step 4: Simplify right side
    604,219.18x = 260,765,777,806.86
  5. Step 5: Solve for x
    x = 260,765,777,806.86/604,219.18
  6. Step 6: Final answer
    x = 431,574.81

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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.