Home / 516,839.87-713,254.43-312,928.08

Finding the Fourth Proportional to 516,839.87, 713,254.43 and 312,928.08

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Solution

The fourth proportional to 516,839.87, 713,254.43 and 312,928.08 is: 431,850.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,839.87 : 713,254.43 = 312,928.08 : x
  2. Step 2: Convert to fraction form
    516,839.87/713,254.43 = 312,928.08/x
  3. Step 3: Cross multiply
    516,839.87x = 713,254.43 × 312,928.08
  4. Step 4: Simplify right side
    516,839.87x = 223,197,337,766.75
  5. Step 5: Solve for x
    x = 223,197,337,766.75/516,839.87
  6. Step 6: Final answer
    x = 431,850.08

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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.