Home / 920,100.64-1,269,725.19-512,201.74

Finding the Fourth Proportional to 920,100.64, 1,269,725.19 and 512,201.74

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Solution

The fourth proportional to 920,100.64, 1,269,725.19 and 512,201.74 is: 706,830.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,100.64 : 1,269,725.19 = 512,201.74 : x
  2. Step 2: Convert to fraction form
    920,100.64/1,269,725.19 = 512,201.74/x
  3. Step 3: Cross multiply
    920,100.64x = 1,269,725.19 × 512,201.74
  4. Step 4: Simplify right side
    920,100.64x = 650,355,451,639.83
  5. Step 5: Solve for x
    x = 650,355,451,639.83/920,100.64
  6. Step 6: Final answer
    x = 706,830.78

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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.