Home / 728,789.67-1,005,727.08-406,499.49

Finding the Fourth Proportional to 728,789.67, 1,005,727.08 and 406,499.49

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Solution

The fourth proportional to 728,789.67, 1,005,727.08 and 406,499.49 is: 560,967.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,789.67 : 1,005,727.08 = 406,499.49 : x
  2. Step 2: Convert to fraction form
    728,789.67/1,005,727.08 = 406,499.49/x
  3. Step 3: Cross multiply
    728,789.67x = 1,005,727.08 × 406,499.49
  4. Step 4: Simplify right side
    728,789.67x = 408,827,545,099.19
  5. Step 5: Solve for x
    x = 408,827,545,099.19/728,789.67
  6. Step 6: Final answer
    x = 560,967.81

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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.