Home / 718,914.89-992,067.93-392,208.45

Finding the Fourth Proportional to 718,914.89, 992,067.93 and 392,208.45

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Solution

The fourth proportional to 718,914.89, 992,067.93 and 392,208.45 is: 541,228.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,914.89 : 992,067.93 = 392,208.45 : x
  2. Step 2: Convert to fraction form
    718,914.89/992,067.93 = 392,208.45/x
  3. Step 3: Cross multiply
    718,914.89x = 992,067.93 × 392,208.45
  4. Step 4: Simplify right side
    718,914.89x = 389,097,428,667.24
  5. Step 5: Solve for x
    x = 389,097,428,667.24/718,914.89
  6. Step 6: Final answer
    x = 541,228.78

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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.