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Finding the Fourth Proportional to 579,512.70, 869,269.05 and 366,936.30

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Solution

The fourth proportional to 579,512.70, 869,269.05 and 366,936.30 is: 550,404.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,512.70 : 869,269.05 = 366,936.30 : x
  2. Step 2: Convert to fraction form
    579,512.70/869,269.05 = 366,936.30/x
  3. Step 3: Cross multiply
    579,512.70x = 869,269.05 × 366,936.30
  4. Step 4: Simplify right side
    579,512.70x = 318,966,368,911.52
  5. Step 5: Solve for x
    x = 318,966,368,911.52/579,512.70
  6. Step 6: Final answer
    x = 550,404.45

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Double scale
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Similar ratio
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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.