Home / 571,939.20-789,266.40-317,284.80

Finding the Fourth Proportional to 571,939.20, 789,266.40 and 317,284.80

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Solution

The fourth proportional to 571,939.20, 789,266.40 and 317,284.80 is: 437,847.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,939.20 : 789,266.40 = 317,284.80 : x
  2. Step 2: Convert to fraction form
    571,939.20/789,266.40 = 317,284.80/x
  3. Step 3: Cross multiply
    571,939.20x = 789,266.40 × 317,284.80
  4. Step 4: Simplify right side
    571,939.20x = 250,422,231,870.72
  5. Step 5: Solve for x
    x = 250,422,231,870.72/571,939.20
  6. Step 6: Final answer
    x = 437,847.65

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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.