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Finding the Fourth Proportional to 624,649.78, 862,016.82 and 338,172.22

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Solution

The fourth proportional to 624,649.78, 862,016.82 and 338,172.22 is: 466,677.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,649.78 : 862,016.82 = 338,172.22 : x
  2. Step 2: Convert to fraction form
    624,649.78/862,016.82 = 338,172.22/x
  3. Step 3: Cross multiply
    624,649.78x = 862,016.82 × 338,172.22
  4. Step 4: Simplify right side
    624,649.78x = 291,510,141,696.74
  5. Step 5: Solve for x
    x = 291,510,141,696.74/624,649.78
  6. Step 6: Final answer
    x = 466,677.73

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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.