Home / 780,123.60-1,170,298.80-330,843.60

Finding the Fourth Proportional to 780,123.60, 1,170,298.80 and 330,843.60

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Solution

The fourth proportional to 780,123.60, 1,170,298.80 and 330,843.60 is: 496,313.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,123.60 : 1,170,298.80 = 330,843.60 : x
  2. Step 2: Convert to fraction form
    780,123.60/1,170,298.80 = 330,843.60/x
  3. Step 3: Cross multiply
    780,123.60x = 1,170,298.80 × 330,843.60
  4. Step 4: Simplify right side
    780,123.60x = 387,185,868,067.68
  5. Step 5: Solve for x
    x = 387,185,868,067.68/780,123.60
  6. Step 6: Final answer
    x = 496,313.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.