Home / 1,425,515.52-2,138,280.96-428,236.80

Finding the Fourth Proportional to 1,425,515.52, 2,138,280.96 and 428,236.80

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Solution

The fourth proportional to 1,425,515.52, 2,138,280.96 and 428,236.80 is: 642,357.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,515.52 : 2,138,280.96 = 428,236.80 : x
  2. Step 2: Convert to fraction form
    1,425,515.52/2,138,280.96 = 428,236.80/x
  3. Step 3: Cross multiply
    1,425,515.52x = 2,138,280.96 × 428,236.80
  4. Step 4: Simplify right side
    1,425,515.52x = 915,690,595,811.33
  5. Step 5: Solve for x
    x = 915,690,595,811.33/1,425,515.52
  6. Step 6: Final answer
    x = 642,357.51

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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.