Home / 766,689.00-1,148,559.55-428,704.55

Finding the Fourth Proportional to 766,689.00, 1,148,559.55 and 428,704.55

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Solution

The fourth proportional to 766,689.00, 1,148,559.55 and 428,704.55 is: 642,232.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,689.00 : 1,148,559.55 = 428,704.55 : x
  2. Step 2: Convert to fraction form
    766,689.00/1,148,559.55 = 428,704.55/x
  3. Step 3: Cross multiply
    766,689.00x = 1,148,559.55 × 428,704.55
  4. Step 4: Simplify right side
    766,689.00x = 492,392,702,523.49
  5. Step 5: Solve for x
    x = 492,392,702,523.49/766,689.00
  6. Step 6: Final answer
    x = 642,232.65

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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.