Home / 1,328,986.20-1,993,770.90-430,469.40

Finding the Fourth Proportional to 1,328,986.20, 1,993,770.90 and 430,469.40

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Solution

The fourth proportional to 1,328,986.20, 1,993,770.90 and 430,469.40 is: 645,798.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,986.20 : 1,993,770.90 = 430,469.40 : x
  2. Step 2: Convert to fraction form
    1,328,986.20/1,993,770.90 = 430,469.40/x
  3. Step 3: Cross multiply
    1,328,986.20x = 1,993,770.90 × 430,469.40
  4. Step 4: Simplify right side
    1,328,986.20x = 858,257,363,060.46
  5. Step 5: Solve for x
    x = 858,257,363,060.46/1,328,986.20
  6. Step 6: Final answer
    x = 645,798.55

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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.