Home / 872,520.56-1,203,684.83-509,781.32

Finding the Fourth Proportional to 872,520.56, 1,203,684.83 and 509,781.32

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Solution

The fourth proportional to 872,520.56, 1,203,684.83 and 509,781.32 is: 703,268.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,520.56 : 1,203,684.83 = 509,781.32 : x
  2. Step 2: Convert to fraction form
    872,520.56/1,203,684.83 = 509,781.32/x
  3. Step 3: Cross multiply
    872,520.56x = 1,203,684.83 × 509,781.32
  4. Step 4: Simplify right side
    872,520.56x = 613,616,032,934.05
  5. Step 5: Solve for x
    x = 613,616,032,934.05/872,520.56
  6. Step 6: Final answer
    x = 703,268.28

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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.