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Finding the Fourth Proportional to 402,630, 604,141.82 and 285,056.88

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Solution

The fourth proportional to 402,630, 604,141.82 and 285,056.88 is: 427,724.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,630 : 604,141.82 = 285,056.88 : x
  2. Step 2: Convert to fraction form
    402,630/604,141.82 = 285,056.88/x
  3. Step 3: Cross multiply
    402,630x = 604,141.82 × 285,056.88
  4. Step 4: Simplify right side
    402,630x = 172,214,782,286.72
  5. Step 5: Solve for x
    x = 172,214,782,286.72/402,630
  6. Step 6: Final answer
    x = 427,724.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.