Home / 516,361.28-712,634.09-312,524.37

Finding the Fourth Proportional to 516,361.28, 712,634.09 and 312,524.37

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Solution

The fourth proportional to 516,361.28, 712,634.09 and 312,524.37 is: 431,317.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,361.28 : 712,634.09 = 312,524.37 : x
  2. Step 2: Convert to fraction form
    516,361.28/712,634.09 = 312,524.37/x
  3. Step 3: Cross multiply
    516,361.28x = 712,634.09 × 312,524.37
  4. Step 4: Simplify right side
    516,361.28x = 222,715,518,455.15
  5. Step 5: Solve for x
    x = 222,715,518,455.15/516,361.28
  6. Step 6: Final answer
    x = 431,317.24

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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.