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Finding the Fourth Proportional to 625,457.56, 863,128.02 and 338,974.60

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Solution

The fourth proportional to 625,457.56, 863,128.02 and 338,974.60 is: 467,783.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,457.56 : 863,128.02 = 338,974.60 : x
  2. Step 2: Convert to fraction form
    625,457.56/863,128.02 = 338,974.60/x
  3. Step 3: Cross multiply
    625,457.56x = 863,128.02 × 338,974.60
  4. Step 4: Simplify right side
    625,457.56x = 292,578,475,328.29
  5. Step 5: Solve for x
    x = 292,578,475,328.29/625,457.56
  6. Step 6: Final answer
    x = 467,783.10

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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.