Home / 1,328,845.20-1,993,008.60-430,069.20

Finding the Fourth Proportional to 1,328,845.20, 1,993,008.60 and 430,069.20

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Solution

The fourth proportional to 1,328,845.20, 1,993,008.60 and 430,069.20 is: 645,019.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,845.20 : 1,993,008.60 = 430,069.20 : x
  2. Step 2: Convert to fraction form
    1,328,845.20/1,993,008.60 = 430,069.20/x
  3. Step 3: Cross multiply
    1,328,845.20x = 1,993,008.60 × 430,069.20
  4. Step 4: Simplify right side
    1,328,845.20x = 857,131,614,195.12
  5. Step 5: Solve for x
    x = 857,131,614,195.12/1,328,845.20
  6. Step 6: Final answer
    x = 645,019.91

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1.5x scale

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.