Home / 1,328,782.55-1,993,490.61-430,224.56

Finding the Fourth Proportional to 1,328,782.55, 1,993,490.61 and 430,224.56

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Solution

The fourth proportional to 1,328,782.55, 1,993,490.61 and 430,224.56 is: 645,439.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,782.55 : 1,993,490.61 = 430,224.56 : x
  2. Step 2: Convert to fraction form
    1,328,782.55/1,993,490.61 = 430,224.56/x
  3. Step 3: Cross multiply
    1,328,782.55x = 1,993,490.61 × 430,224.56
  4. Step 4: Simplify right side
    1,328,782.55x = 857,648,610,583.93
  5. Step 5: Solve for x
    x = 857,648,610,583.93/1,328,782.55
  6. Step 6: Final answer
    x = 645,439.40

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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.