Home / 1,328,589.70-1,993,200.92-430,031.58

Finding the Fourth Proportional to 1,328,589.70, 1,993,200.92 and 430,031.58

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Solution

The fourth proportional to 1,328,589.70, 1,993,200.92 and 430,031.58 is: 645,149.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,589.70 : 1,993,200.92 = 430,031.58 : x
  2. Step 2: Convert to fraction form
    1,328,589.70/1,993,200.92 = 430,031.58/x
  3. Step 3: Cross multiply
    1,328,589.70x = 1,993,200.92 × 430,031.58
  4. Step 4: Simplify right side
    1,328,589.70x = 857,139,340,885.05
  5. Step 5: Solve for x
    x = 857,139,340,885.05/1,328,589.70
  6. Step 6: Final answer
    x = 645,149.77

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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.