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Finding the Fourth Proportional to 646,266.60, 969,399.90 and 512,422.20

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Solution

The fourth proportional to 646,266.60, 969,399.90 and 512,422.20 is: 768,633.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,266.60 : 969,399.90 = 512,422.20 : x
  2. Step 2: Convert to fraction form
    646,266.60/969,399.90 = 512,422.20/x
  3. Step 3: Cross multiply
    646,266.60x = 969,399.90 × 512,422.20
  4. Step 4: Simplify right side
    646,266.60x = 496,742,029,437.78
  5. Step 5: Solve for x
    x = 496,742,029,437.78/646,266.60
  6. Step 6: Final answer
    x = 768,633.30

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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.