Home / 621,125.20-931,774.20-266,136.40

Finding the Fourth Proportional to 621,125.20, 931,774.20 and 266,136.40

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Solution

The fourth proportional to 621,125.20, 931,774.20 and 266,136.40 is: 399,241.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,125.20 : 931,774.20 = 266,136.40 : x
  2. Step 2: Convert to fraction form
    621,125.20/931,774.20 = 266,136.40/x
  3. Step 3: Cross multiply
    621,125.20x = 931,774.20 × 266,136.40
  4. Step 4: Simplify right side
    621,125.20x = 247,979,031,200.88
  5. Step 5: Solve for x
    x = 247,979,031,200.88/621,125.20
  6. Step 6: Final answer
    x = 399,241.62

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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.