Home / 831,142.80-1,246,714.20-726,166.80

Finding the Fourth Proportional to 831,142.80, 1,246,714.20 and 726,166.80

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Solution

The fourth proportional to 831,142.80, 1,246,714.20 and 726,166.80 is: 1,089,250.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,142.80 : 1,246,714.20 = 726,166.80 : x
  2. Step 2: Convert to fraction form
    831,142.80/1,246,714.20 = 726,166.80/x
  3. Step 3: Cross multiply
    831,142.80x = 1,246,714.20 × 726,166.80
  4. Step 4: Simplify right side
    831,142.80x = 905,322,461,128.56
  5. Step 5: Solve for x
    x = 905,322,461,128.56/831,142.80
  6. Step 6: Final answer
    x = 1,089,250.20

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Half scale
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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.