Home / 728,783.20-1,005,718.20-406,493.04

Finding the Fourth Proportional to 728,783.20, 1,005,718.20 and 406,493.04

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Solution

The fourth proportional to 728,783.20, 1,005,718.20 and 406,493.04 is: 560,958.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,783.20 : 1,005,718.20 = 406,493.04 : x
  2. Step 2: Convert to fraction form
    728,783.20/1,005,718.20 = 406,493.04/x
  3. Step 3: Cross multiply
    728,783.20x = 1,005,718.20 × 406,493.04
  4. Step 4: Simplify right side
    728,783.20x = 408,817,448,501.33
  5. Step 5: Solve for x
    x = 408,817,448,501.33/728,783.20
  6. Step 6: Final answer
    x = 560,958.94

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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.