Home / 728,797.04-1,005,743.62-402,121.34

Finding the Fourth Proportional to 728,797.04, 1,005,743.62 and 402,121.34

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Solution

The fourth proportional to 728,797.04, 1,005,743.62 and 402,121.34 is: 554,929.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,797.04 : 1,005,743.62 = 402,121.34 : x
  2. Step 2: Convert to fraction form
    728,797.04/1,005,743.62 = 402,121.34/x
  3. Step 3: Cross multiply
    728,797.04x = 1,005,743.62 × 402,121.34
  4. Step 4: Simplify right side
    728,797.04x = 404,430,972,170.85
  5. Step 5: Solve for x
    x = 404,430,972,170.85/728,797.04
  6. Step 6: Final answer
    x = 554,929.49

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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.