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Finding the Fourth Proportional to 777,424.32, 1,073,113.92 and 455,238

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Solution

The fourth proportional to 777,424.32, 1,073,113.92 and 455,238 is: 628,385.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,424.32 : 1,073,113.92 = 455,238 : x
  2. Step 2: Convert to fraction form
    777,424.32/1,073,113.92 = 455,238/x
  3. Step 3: Cross multiply
    777,424.32x = 1,073,113.92 × 455,238
  4. Step 4: Simplify right side
    777,424.32x = 488,522,234,712.96
  5. Step 5: Solve for x
    x = 488,522,234,712.96/777,424.32
  6. Step 6: Final answer
    x = 628,385.58

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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.