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Finding the Fourth Proportional to 625,905.64, 863,750.22 and 339,425.64

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Solution

The fourth proportional to 625,905.64, 863,750.22 and 339,425.64 is: 468,407.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,905.64 : 863,750.22 = 339,425.64 : x
  2. Step 2: Convert to fraction form
    625,905.64/863,750.22 = 339,425.64/x
  3. Step 3: Cross multiply
    625,905.64x = 863,750.22 × 339,425.64
  4. Step 4: Simplify right side
    625,905.64x = 293,178,971,223.64
  5. Step 5: Solve for x
    x = 293,178,971,223.64/625,905.64
  6. Step 6: Final answer
    x = 468,407.62

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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.