Home / 780,438.96-1,170,658.71-219,473.46

Finding the Fourth Proportional to 780,438.96, 1,170,658.71 and 219,473.46

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Solution

The fourth proportional to 780,438.96, 1,170,658.71 and 219,473.46 is: 329,210.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,438.96 : 1,170,658.71 = 219,473.46 : x
  2. Step 2: Convert to fraction form
    780,438.96/1,170,658.71 = 219,473.46/x
  3. Step 3: Cross multiply
    780,438.96x = 1,170,658.71 × 219,473.46
  4. Step 4: Simplify right side
    780,438.96x = 256,928,517,562.84
  5. Step 5: Solve for x
    x = 256,928,517,562.84/780,438.96
  6. Step 6: Final answer
    x = 329,210.27

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Half scale
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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.