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Finding the Fourth Proportional to 625,457.84, 863,133.32 and 338,977.86

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Solution

The fourth proportional to 625,457.84, 863,133.32 and 338,977.86 is: 467,790.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,457.84 : 863,133.32 = 338,977.86 : x
  2. Step 2: Convert to fraction form
    625,457.84/863,133.32 = 338,977.86/x
  3. Step 3: Cross multiply
    625,457.84x = 863,133.32 × 338,977.86
  4. Step 4: Simplify right side
    625,457.84x = 292,583,085,708.30
  5. Step 5: Solve for x
    x = 292,583,085,708.30/625,457.84
  6. Step 6: Final answer
    x = 467,790.26

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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.