Home / 780,576.31-1,171,926.68-439,260.86

Finding the Fourth Proportional to 780,576.31, 1,171,926.68 and 439,260.86

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Solution

The fourth proportional to 780,576.31, 1,171,926.68 and 439,260.86 is: 659,489.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,576.31 : 1,171,926.68 = 439,260.86 : x
  2. Step 2: Convert to fraction form
    780,576.31/1,171,926.68 = 439,260.86/x
  3. Step 3: Cross multiply
    780,576.31x = 1,171,926.68 × 439,260.86
  4. Step 4: Simplify right side
    780,576.31x = 514,781,519,117.44
  5. Step 5: Solve for x
    x = 514,781,519,117.44/780,576.31
  6. Step 6: Final answer
    x = 659,489.04

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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.