Home / 728,116.47-1,004,805.39-405,847.00

Finding the Fourth Proportional to 728,116.47, 1,004,805.39 and 405,847.00

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Solution

The fourth proportional to 728,116.47, 1,004,805.39 and 405,847.00 is: 560,071.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,116.47 : 1,004,805.39 = 405,847.00 : x
  2. Step 2: Convert to fraction form
    728,116.47/1,004,805.39 = 405,847.00/x
  3. Step 3: Cross multiply
    728,116.47x = 1,004,805.39 × 405,847.00
  4. Step 4: Simplify right side
    728,116.47x = 407,797,246,062.07
  5. Step 5: Solve for x
    x = 407,797,246,062.07/728,116.47
  6. Step 6: Final answer
    x = 560,071.45

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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.