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Finding the Fourth Proportional to 579,856.71, 869,576.70 and 200,674.55

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Solution

The fourth proportional to 579,856.71, 869,576.70 and 200,674.55 is: 300,939.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,856.71 : 869,576.70 = 200,674.55 : x
  2. Step 2: Convert to fraction form
    579,856.71/869,576.70 = 200,674.55/x
  3. Step 3: Cross multiply
    579,856.71x = 869,576.70 × 200,674.55
  4. Step 4: Simplify right side
    579,856.71x = 174,501,912,962.99
  5. Step 5: Solve for x
    x = 174,501,912,962.99/579,856.71
  6. Step 6: Final answer
    x = 300,939.71

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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.