Home / 728,117.12-1,004,806.29-405,847.65

Finding the Fourth Proportional to 728,117.12, 1,004,806.29 and 405,847.65

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Solution

The fourth proportional to 728,117.12, 1,004,806.29 and 405,847.65 is: 560,072.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,117.12 : 1,004,806.29 = 405,847.65 : x
  2. Step 2: Convert to fraction form
    728,117.12/1,004,806.29 = 405,847.65/x
  3. Step 3: Cross multiply
    728,117.12x = 1,004,806.29 × 405,847.65
  4. Step 4: Simplify right side
    728,117.12x = 407,798,271,501.72
  5. Step 5: Solve for x
    x = 407,798,271,501.72/728,117.12
  6. Step 6: Final answer
    x = 560,072.36

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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.