Home / 931,105.89-1,395,905.11-291,080.12

Finding the Fourth Proportional to 931,105.89, 1,395,905.11 and 291,080.12

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Solution

The fourth proportional to 931,105.89, 1,395,905.11 and 291,080.12 is: 436,384.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,105.89 : 1,395,905.11 = 291,080.12 : x
  2. Step 2: Convert to fraction form
    931,105.89/1,395,905.11 = 291,080.12/x
  3. Step 3: Cross multiply
    931,105.89x = 1,395,905.11 × 291,080.12
  4. Step 4: Simplify right side
    931,105.89x = 406,320,219,220.19
  5. Step 5: Solve for x
    x = 406,320,219,220.19/931,105.89
  6. Step 6: Final answer
    x = 436,384.54

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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.