Home / 864,009.80-1,296,014.70-486,096.20

Finding the Fourth Proportional to 864,009.80, 1,296,014.70 and 486,096.20

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Solution

The fourth proportional to 864,009.80, 1,296,014.70 and 486,096.20 is: 729,144.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,009.80 : 1,296,014.70 = 486,096.20 : x
  2. Step 2: Convert to fraction form
    864,009.80/1,296,014.70 = 486,096.20/x
  3. Step 3: Cross multiply
    864,009.80x = 1,296,014.70 × 486,096.20
  4. Step 4: Simplify right side
    864,009.80x = 629,987,820,814.14
  5. Step 5: Solve for x
    x = 629,987,820,814.14/864,009.80
  6. Step 6: Final answer
    x = 729,144.30

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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.