Home / 528,743.68-729,661.20-287,021.04

Finding the Fourth Proportional to 528,743.68, 729,661.20 and 287,021.04

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Solution

The fourth proportional to 528,743.68, 729,661.20 and 287,021.04 is: 396,086.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,743.68 : 729,661.20 = 287,021.04 : x
  2. Step 2: Convert to fraction form
    528,743.68/729,661.20 = 287,021.04/x
  3. Step 3: Cross multiply
    528,743.68x = 729,661.20 × 287,021.04
  4. Step 4: Simplify right side
    528,743.68x = 209,428,116,471.65
  5. Step 5: Solve for x
    x = 209,428,116,471.65/528,743.68
  6. Step 6: Final answer
    x = 396,086.28

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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.