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Finding the Fourth Proportional to 579,855.71, 869,575.20 and 200,673.55

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Solution

The fourth proportional to 579,855.71, 869,575.20 and 200,673.55 is: 300,938.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,855.71 : 869,575.20 = 200,673.55 : x
  2. Step 2: Convert to fraction form
    579,855.71/869,575.20 = 200,673.55/x
  3. Step 3: Cross multiply
    579,855.71x = 869,575.20 × 200,673.55
  4. Step 4: Simplify right side
    579,855.71x = 174,500,742,710.40
  5. Step 5: Solve for x
    x = 174,500,742,710.40/579,855.71
  6. Step 6: Final answer
    x = 300,938.21

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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.