Home / 728,201.74-1,004,897.49-405,904.92

Finding the Fourth Proportional to 728,201.74, 1,004,897.49 and 405,904.92

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Solution

The fourth proportional to 728,201.74, 1,004,897.49 and 405,904.92 is: 560,137.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,201.74 : 1,004,897.49 = 405,904.92 : x
  2. Step 2: Convert to fraction form
    728,201.74/1,004,897.49 = 405,904.92/x
  3. Step 3: Cross multiply
    728,201.74x = 1,004,897.49 × 405,904.92
  4. Step 4: Simplify right side
    728,201.74x = 407,892,835,286.65
  5. Step 5: Solve for x
    x = 407,892,835,286.65/728,201.74
  6. Step 6: Final answer
    x = 560,137.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.