Home / 728,104.80-1,004,662.80-405,744.24

Finding the Fourth Proportional to 728,104.80, 1,004,662.80 and 405,744.24

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Solution

The fourth proportional to 728,104.80, 1,004,662.80 and 405,744.24 is: 559,859.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,104.80 : 1,004,662.80 = 405,744.24 : x
  2. Step 2: Convert to fraction form
    728,104.80/1,004,662.80 = 405,744.24/x
  3. Step 3: Cross multiply
    728,104.80x = 1,004,662.80 × 405,744.24
  4. Step 4: Simplify right side
    728,104.80x = 407,636,144,242.27
  5. Step 5: Solve for x
    x = 407,636,144,242.27/728,104.80
  6. Step 6: Final answer
    x = 559,859.16

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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.