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Finding the Fourth Proportional to 579,764.42, 869,638.53 and 200,960.90

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Solution

The fourth proportional to 579,764.42, 869,638.53 and 200,960.90 is: 301,438.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,764.42 : 869,638.53 = 200,960.90 : x
  2. Step 2: Convert to fraction form
    579,764.42/869,638.53 = 200,960.90/x
  3. Step 3: Cross multiply
    579,764.42x = 869,638.53 × 200,960.90
  4. Step 4: Simplify right side
    579,764.42x = 174,763,341,663.48
  5. Step 5: Solve for x
    x = 174,763,341,663.48/579,764.42
  6. Step 6: Final answer
    x = 301,438.54

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1.5x scale

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.