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Finding the Fourth Proportional to 625,457.34, 863,132.63 and 338,977.35

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Solution

The fourth proportional to 625,457.34, 863,132.63 and 338,977.35 is: 467,789.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,457.34 : 863,132.63 = 338,977.35 : x
  2. Step 2: Convert to fraction form
    625,457.34/863,132.63 = 338,977.35/x
  3. Step 3: Cross multiply
    625,457.34x = 863,132.63 × 338,977.35
  4. Step 4: Simplify right side
    625,457.34x = 292,582,409,921.04
  5. Step 5: Solve for x
    x = 292,582,409,921.04/625,457.34
  6. Step 6: Final answer
    x = 467,789.55

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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.