Home / 728,855.52-1,005,822.24-406,586.49

Finding the Fourth Proportional to 728,855.52, 1,005,822.24 and 406,586.49

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Solution

The fourth proportional to 728,855.52, 1,005,822.24 and 406,586.49 is: 561,090.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,855.52 : 1,005,822.24 = 406,586.49 : x
  2. Step 2: Convert to fraction form
    728,855.52/1,005,822.24 = 406,586.49/x
  3. Step 3: Cross multiply
    728,855.52x = 1,005,822.24 × 406,586.49
  4. Step 4: Simplify right side
    728,855.52x = 408,953,734,125.54
  5. Step 5: Solve for x
    x = 408,953,734,125.54/728,855.52
  6. Step 6: Final answer
    x = 561,090.26

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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.