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Finding the Fourth Proportional to 556,906.44, 767,950 and 330,508.20

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Solution

The fourth proportional to 556,906.44, 767,950 and 330,508.20 is: 455,756.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,906.44 : 767,950 = 330,508.20 : x
  2. Step 2: Convert to fraction form
    556,906.44/767,950 = 330,508.20/x
  3. Step 3: Cross multiply
    556,906.44x = 767,950 × 330,508.20
  4. Step 4: Simplify right side
    556,906.44x = 253,813,772,190
  5. Step 5: Solve for x
    x = 253,813,772,190/556,906.44
  6. Step 6: Final answer
    x = 455,756.58

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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.