Home / 864,008.40-1,296,012.60-443,326.80

Finding the Fourth Proportional to 864,008.40, 1,296,012.60 and 443,326.80

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Solution

The fourth proportional to 864,008.40, 1,296,012.60 and 443,326.80 is: 664,990.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,008.40 : 1,296,012.60 = 443,326.80 : x
  2. Step 2: Convert to fraction form
    864,008.40/1,296,012.60 = 443,326.80/x
  3. Step 3: Cross multiply
    864,008.40x = 1,296,012.60 × 443,326.80
  4. Step 4: Simplify right side
    864,008.40x = 574,557,118,717.68
  5. Step 5: Solve for x
    x = 574,557,118,717.68/864,008.40
  6. Step 6: Final answer
    x = 664,990.20

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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.