Home / 728,956.82-1,005,960.84-406,666.91

Finding the Fourth Proportional to 728,956.82, 1,005,960.84 and 406,666.91

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Solution

The fourth proportional to 728,956.82, 1,005,960.84 and 406,666.91 is: 561,200.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,956.82 : 1,005,960.84 = 406,666.91 : x
  2. Step 2: Convert to fraction form
    728,956.82/1,005,960.84 = 406,666.91/x
  3. Step 3: Cross multiply
    728,956.82x = 1,005,960.84 × 406,666.91
  4. Step 4: Simplify right side
    728,956.82x = 409,090,986,383.80
  5. Step 5: Solve for x
    x = 409,090,986,383.80/728,956.82
  6. Step 6: Final answer
    x = 561,200.57

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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.