Home / 823,325.40-1,234,986.66-424,080.30

Finding the Fourth Proportional to 823,325.40, 1,234,986.66 and 424,080.30

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Solution

The fourth proportional to 823,325.40, 1,234,986.66 and 424,080.30 is: 636,119.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,325.40 : 1,234,986.66 = 424,080.30 : x
  2. Step 2: Convert to fraction form
    823,325.40/1,234,986.66 = 424,080.30/x
  3. Step 3: Cross multiply
    823,325.40x = 1,234,986.66 × 424,080.30
  4. Step 4: Simplify right side
    823,325.40x = 523,733,513,268.80
  5. Step 5: Solve for x
    x = 523,733,513,268.80/823,325.40
  6. Step 6: Final answer
    x = 636,119.71

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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.