Home / 403,979.60-557,844.36-253,336.40

Finding the Fourth Proportional to 403,979.60, 557,844.36 and 253,336.40

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Solution

The fourth proportional to 403,979.60, 557,844.36 and 253,336.40 is: 349,825.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,979.60 : 557,844.36 = 253,336.40 : x
  2. Step 2: Convert to fraction form
    403,979.60/557,844.36 = 253,336.40/x
  3. Step 3: Cross multiply
    403,979.60x = 557,844.36 × 253,336.40
  4. Step 4: Simplify right side
    403,979.60x = 141,322,281,922.70
  5. Step 5: Solve for x
    x = 141,322,281,922.70/403,979.60
  6. Step 6: Final answer
    x = 349,825.29

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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.