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Finding the Fourth Proportional to 492,060.96, 679,170.80 and 320,407.38

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Solution

The fourth proportional to 492,060.96, 679,170.80 and 320,407.38 is: 442,244.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,060.96 : 679,170.80 = 320,407.38 : x
  2. Step 2: Convert to fraction form
    492,060.96/679,170.80 = 320,407.38/x
  3. Step 3: Cross multiply
    492,060.96x = 679,170.80 × 320,407.38
  4. Step 4: Simplify right side
    492,060.96x = 217,611,336,600.50
  5. Step 5: Solve for x
    x = 217,611,336,600.50/492,060.96
  6. Step 6: Final answer
    x = 442,244.67

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1.5x scale

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.