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Finding the Fourth Proportional to 625,558.56, 863,265.84 and 339,071.28

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Solution

The fourth proportional to 625,558.56, 863,265.84 and 339,071.28 is: 467,915.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,558.56 : 863,265.84 = 339,071.28 : x
  2. Step 2: Convert to fraction form
    625,558.56/863,265.84 = 339,071.28/x
  3. Step 3: Cross multiply
    625,558.56x = 863,265.84 × 339,071.28
  4. Step 4: Simplify right side
    625,558.56x = 292,708,653,349.08
  5. Step 5: Solve for x
    x = 292,708,653,349.08/625,558.56
  6. Step 6: Final answer
    x = 467,915.67

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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.