Home / 864,009.40-1,296,014.10-443,327.80

Finding the Fourth Proportional to 864,009.40, 1,296,014.10 and 443,327.80

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Solution

The fourth proportional to 864,009.40, 1,296,014.10 and 443,327.80 is: 664,991.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,009.40 : 1,296,014.10 = 443,327.80 : x
  2. Step 2: Convert to fraction form
    864,009.40/1,296,014.10 = 443,327.80/x
  3. Step 3: Cross multiply
    864,009.40x = 1,296,014.10 × 443,327.80
  4. Step 4: Simplify right side
    864,009.40x = 574,559,079,721.98
  5. Step 5: Solve for x
    x = 574,559,079,721.98/864,009.40
  6. Step 6: Final answer
    x = 664,991.70

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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.