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Finding the Fourth Proportional to 624,897.45, 862,361.64 and 338,418.72

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Solution

The fourth proportional to 624,897.45, 862,361.64 and 338,418.72 is: 467,019.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,897.45 : 862,361.64 = 338,418.72 : x
  2. Step 2: Convert to fraction form
    624,897.45/862,361.64 = 338,418.72/x
  3. Step 3: Cross multiply
    624,897.45x = 862,361.64 × 338,418.72
  4. Step 4: Simplify right side
    624,897.45x = 291,839,322,385.90
  5. Step 5: Solve for x
    x = 291,839,322,385.90/624,897.45
  6. Step 6: Final answer
    x = 467,019.54

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1.5x scale

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.