Home / 728,644.99-1,092,007.89-408,790.75

Finding the Fourth Proportional to 728,644.99, 1,092,007.89 and 408,790.75

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Solution

The fourth proportional to 728,644.99, 1,092,007.89 and 408,790.75 is: 612,647.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,644.99 : 1,092,007.89 = 408,790.75 : x
  2. Step 2: Convert to fraction form
    728,644.99/1,092,007.89 = 408,790.75/x
  3. Step 3: Cross multiply
    728,644.99x = 1,092,007.89 × 408,790.75
  4. Step 4: Simplify right side
    728,644.99x = 446,402,724,359.02
  5. Step 5: Solve for x
    x = 446,402,724,359.02/728,644.99
  6. Step 6: Final answer
    x = 612,647.76

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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.