Home / 386,128.44-576,551.55-345,887.64

Finding the Fourth Proportional to 386,128.44, 576,551.55 and 345,887.64

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Solution

The fourth proportional to 386,128.44, 576,551.55 and 345,887.64 is: 516,465.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,128.44 : 576,551.55 = 345,887.64 : x
  2. Step 2: Convert to fraction form
    386,128.44/576,551.55 = 345,887.64/x
  3. Step 3: Cross multiply
    386,128.44x = 576,551.55 × 345,887.64
  4. Step 4: Simplify right side
    386,128.44x = 199,422,054,967.84
  5. Step 5: Solve for x
    x = 199,422,054,967.84/386,128.44
  6. Step 6: Final answer
    x = 516,465.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.