Home / 817,067.80-1,225,601.70-780,326.20

Finding the Fourth Proportional to 817,067.80, 1,225,601.70 and 780,326.20

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Solution

The fourth proportional to 817,067.80, 1,225,601.70 and 780,326.20 is: 1,170,489.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,067.80 : 1,225,601.70 = 780,326.20 : x
  2. Step 2: Convert to fraction form
    817,067.80/1,225,601.70 = 780,326.20/x
  3. Step 3: Cross multiply
    817,067.80x = 1,225,601.70 × 780,326.20
  4. Step 4: Simplify right side
    817,067.80x = 956,369,117,274.54
  5. Step 5: Solve for x
    x = 956,369,117,274.54/817,067.80
  6. Step 6: Final answer
    x = 1,170,489.30

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Double scale
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Similar ratio
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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.