Home / 920,172.96-1,269,708.02-512,218.16

Finding the Fourth Proportional to 920,172.96, 1,269,708.02 and 512,218.16

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Solution

The fourth proportional to 920,172.96, 1,269,708.02 and 512,218.16 is: 706,788.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,172.96 : 1,269,708.02 = 512,218.16 : x
  2. Step 2: Convert to fraction form
    920,172.96/1,269,708.02 = 512,218.16/x
  3. Step 3: Cross multiply
    920,172.96x = 1,269,708.02 × 512,218.16
  4. Step 4: Simplify right side
    920,172.96x = 650,367,505,741.64
  5. Step 5: Solve for x
    x = 650,367,505,741.64/920,172.96
  6. Step 6: Final answer
    x = 706,788.33

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.